Nursing intervention studies require outcome measures that are sensitive to change: Part One

A Systematic Review of the Hill-Bone Compliance to Blood Pressure Therapy Scale

Background

Poor medication adherence hampers hypertension control and increases the risk of adverse health outcomes. Medication adherence can be measured with direct and indirect methods. The Hill-Bone Compliance to High Blood Pressure Therapy (HBCHBPT) Scale, one of the most popular adherence measures, indirectly assesses adherence to hypertension therapy in three behavioral domains: appointment keeping, diet and medication adherence.

Aim

To synthesize evidence on the use of the HBCHBPT Scale, including psychometric properties, utility in diverse patient populations, and directions for future clinical use and research.

Methods

We searched electronic databases, specifically CINAHL, PubMed, PsychInfo, Embase, and Web of Science. We included original studies that used the HBCHBPT Scale or its subscales to measure a health outcome, or methodological studies involving translations and validations of the scale. We extracted and synthesized data following the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines.

Results

Fifty studies were included in this review, 44 on hypertension, two on diabetes, and others on other chronic conditions. The scale was successfully translated into numerous languages and used in descriptive and intervention studies. The scale demonstrated sound psychometric properties (Cronbach's α coefficient 0.75) and sensitivity to capture intervention effects when used to evaluate the effectiveness of high blood pressure adherence interventions. The medication-taking subscale of HBCHBPT performs best and is widely used in diverse contexts to assess medication adherence for chronic conditions.

Conclusion

The HBCHBPT Scale has high versatility globally and has been used in various settings by various healthcare worker cadres and researchers. The scale has several strengths, including high adherence phenotyping capabilities, contributing to the paradigm shift toward personalized health care.

Case management vocational rehabilitation for women with breast cancer after surgery: a feasibility study incorporating a pilot randomised controlled trial

Background

There is a paucity of methodologically robust vocational rehabilitation (VR) intervention trials. This study assessed the feasibility and acceptability of a VR trial of women with breast cancer to inform the development of a larger interventional study.

Methods

Women were recruited in Scotland and randomised to either a case management VR service or to usual care. Data were collected on eligibility, recruitment and attrition rates to assess trial feasibility, and interviews conducted to determine trial acceptability. Sick leave days (primary outcome) were self-reported via postal questionnaire every 4 weeks during the first 6 months post-surgery and at 12 months. Secondary outcome measures were change in employment pattern, quality of life and fatigue.

Results

Of the 1,114 women assessed for eligibility, 163 (15%) were eligible. The main reason for ineligibility was age (>65 years, n = 637, 67%). Of those eligible, 111 (68%) received study information, of which 23 (21%) consented to participate in the study. Data for 18 (78%) women were analysed (intervention: n = 7; control: n = 11). Participants in the intervention group reported, on average, 53 fewer days of sick leave over the first 6 months post-surgery than those in the control group; however, this difference was not statistically significant (p = 0.122; 95% confidence interval −15.8, 122.0). No statistically significant differences were found for secondary outcomes. Interviews with trial participants indicated that trial procedures, including recruitment, randomisation and research instruments, were acceptable.

Conclusions

Conducting a pragmatic trial of effectiveness of a VR intervention among cancer survivors is both feasible and acceptable, but more research about the exact components of a VR intervention and choice of outcomes to measure effectiveness is required. VR to assist breast cancer patients in the return to work process is an important component of cancer survivorship plans.

Trial registration

ISRCTN29666484

Health trajectory research: a call to action for nursing science

The focus of health trajectory research is study of health over time for individual persons, families, or communities. The person-focused, time-based perspective reflects health as it is experienced over the life course and maps directly onto processes of care, contributing to ease in translation of results to practice. The agenda focuses on theoretical and empirical components needed to (a) build health trajectory science; (b) develop the scientific workforce to conduct health trajectory research; (c) integrate health trajectory research with other critical, emerging areas of nursing science (genomics and genetics, informatics, dynamic systems and communication); and (d) apply health trajectory research across the life span and continuum of care. Agenda items point the way toward a reorientation of nursing research that incorporates and emphasizes understanding of individual health trajectories.

A clinical trial of an individualised intervention programme for family caregivers of older stroke victims in Taiwan

AIM AND OBJECTIVE

To explore the long-term effects of a discharge-preparation programme targeting Taiwanese family caregivers of older patients with stroke.

BACKGROUND

Little is known about the effects of interventions for caregivers of patients with stroke in Asian and Chinese families.

DESIGN

A randomised experimental design was used.

METHOD

Participants included 158 older patients with stroke (72 in the experimental group and 86 in the control group) and their family caregivers. A caregiver-oriented intervention programme was designed to increase caregiver preparedness, to enhance caregiver perception of balance between competing needs and to satisfy specific needs during the transition between hospitalisation and discharge. Long-term outcomes were measured by caregiver's health-related quality of life, quality of care, stroke patient's self-care ability, patient's health-related quality of life and service utilisation. Longitudinal data were analysed by the generalised estimating equation approach.

RESULTS

During the 12 months following discharge of older patients with stroke, caregivers in the experimental group provided significantly better quality of care (beta = 0.45; p = 0.03) than the control group. Between the sixth-twelfth months following discharge, patients in the control group were more likely to be institutionalised than those in the experimental group (chi(2) = 5.11; p = 0.03).

CONCLUSION

Using a sample from Taiwan, this intervention programme succeeded in improving quality of care provided by family caregivers to older patients with stroke and in decreasing the likelihood of their institutionalisation.

RELEVANCE TO CLINICAL PRACTICE

Older Chinese patients with stroke and their family caregivers can benefit from an individualised programme that prepares caregivers for patient discharge. Similar programmes may be applicable to other countries with Chinese populations.

Effect of early skin-to-skin contact on mother-preterm infant interaction through 18 months: randomized controlled trial

BACKGROUND

Preterm birth often negatively influences mother-infant interaction. Skin-to-skin contact postbirth has positive effects on maternal feelings toward their preterm infants and on infant development and family interaction. However, little is known about the long-term effects of skin-to-skin contact on mother-late preterm infant interaction when skin-to-skin contact was experienced early postbirth and intermittently throughout the next five days.

OBJECTIVE

The purpose of this report was to examine the effect of skin-to-skin contact on mother-late preterm infant interaction through 18 months.

DESIGN

Randomized controlled trial with follow-up.

SETTING

Two hospitals in the United States of America.

PARTICIPANTS

100 mothers and their late preterm infants, 32 to <37 weeks' gestation, were recruited. Mother-preterm infant interactions were assessed in 69, 70, and 76 dyads at 6, 12, and 18 months.

METHODS

Mothers and their preterm infants were videotaped during a feeding session at 6 and 12 months, and a teaching session at 6, 12, and 18 months. Their interactions were then scored using the Nursing Child Assessment Satellite Feeding Scale and Teaching Scale.

RESULTS

Skin-to-skin contact and control dyads had comparable feeding scores at 6 and 12 months. Skin-to-skin contact infants had lower infant teaching scores at six months, a difference that disappeared thereafter.

CONCLUSIONS

These inconclusive results call for additional studies with larger doses of skin-to-skin contact, larger sample sizes, and other outcome measures of mother-late preterm infant interactions. Such measures include the Parent-Child Early Relational Assessment and behavioral coding during play.

Development and validation of a cervical cancer screening self-efficacy scale for low-income Mexican American women

Although self-efficacy, a construct from social cognitive theory, has been shown to influence other screening behaviors, few measures currently exist for measuring Papanicolaou test self-efficacy. This article describes the development and psychometric testing of such a measure for Mexican American women. Data from two separate samples of Mexican American women ages>or=50 years, obtained as part of a study to develop and evaluate a breast and cervical cancer screening educational program, were used in the current study. Exploratory factor analysis indicated a single-factor solution and all item loadings were >0.73. Confirmatory analysis confirmed a single-factor structure with all standardized loadings>0.40 as hypothesized. The eight-item self-efficacy scale showed high internal consistency (Cronbach's alpha=0.95). As hypothesized, self-efficacy was correlated with knowledge, prior experience, and screening intention. Logistic regression supported the theoretical relationship that women with higher self-efficacy were more likely to have had a recent Papanicolaou test. Findings showed a significant increase in self-efficacy following the intervention, indicating that the measure has good sensitivity to change over time.

A family caregiver-oriented discharge planning program for older stroke patients and their family caregivers

AIMS

To test the effectiveness of a discharge planning program for dyads of older stroke survivors and their family caregivers in Taiwan.

BACKGROUND

Family caregivers of stroke survivors often feel inadequately prepared to deal with the physical, cognitive and emotional needs of the stroke survivors. However, little information could be found on discharge planning programs for caregivers of stroke survivors in Asian families.

DESIGN

A randomised experimental design was used to explore the effects of a discharge planning program for 158 dyads of older stroke patients and their family caregivers.

METHODS

The control group (n = 86 dyads) received only routine hospital discharge planning services and the experimental group (n = 72 dyads) received routine hospital discharge planning services plus the caregiver-oriented discharge planning program. Outcome variables were measured at baseline, before discharge and one month after hospital discharge. Variables were measured by the Nurse Evaluation of Caregiver Preparation Scale, Preparedness for Caregiving Scale, Caregiver Discharge Needs Satisfaction Scale and Perception of Balance between Competing Needs Scale.

RESULTS

Caregivers in the experimental group had significantly better nurse evaluation and self-evaluation of preparation after the program than before, and greater satisfaction of discharge needs one month after discharge than before discharge. Caregivers in the experimental group had significantly better nurse evaluations and self-evaluations of preparation and better satisfaction of discharge needs after the program compared with the control group. However, no significant difference was found between caregiver groups in perceived balance of competing needs.

CONCLUSIONS

This discharge planning program benefited family caregivers of older stroke patients during the transition from hospitalisation to one month after discharge.

RELEVANCE TO CLINICAL PRACTICE

This caregiver-oriented discharge planning program, with its emphasis on individualised health education and home visits following discharge may improve caregivers' preparation and the satisfaction of their needs during the discharge transition.

Tinnitus outcomes assessment

Over the past two decades, recognition has grown that measures for evaluating treatment outcomes must be designed specifically to have high responsiveness. With that in mind, four major types of tinnitus measures are reviewed, including psychoacoustic measures, self-report questionnaires concerning functional effects of tinnitus, various rating scales, and global outcome measures. Nine commonly used tinnitus questionnaires, developed in the period 1980-2000, are reviewed. Because of many similarities between tinnitus and pain, comparisons between pain and tinnitus measures are discussed, and recommendations that have been made for developing a core set of measures to evaluate treatment-related changes in pain are presented as providing a fruitful path for developing a core set of measures for tinnitus. Finally, the importance of having both immediately obtainable outcome measures (psychoacoustic, rating scales, or single global measures) and longer term measures (questionnaires covering the negative effects of tinnitus) is emphasized for further work in tinnitus outcomes assessment.

Development and content validity testing of the Cardiac Symptom Survey in patients after coronary artery bypass grafting

BACKGROUND

Patients who have undergone coronary artery bypass grafting often experience numerous symptoms after surgery. There is a need for a symptom tool for this population that is disease-specific, comprehensive, and responsive to change.

AIMS

The aims of this study were to describe the development and preliminary content validity testing of the Cardiac Symptom Survey (CSS), assess further content validity of the CSS through an expert panel, and assess responsiveness of the CSS to change.

METHODS

The original development of the CSS is described. An expert panel of four judges was used to rate the clarity of the items (content validity) and the relevance of the symptoms and items to the domain. Responsiveness to change of the CSS was assessed in a sample of 90 subjects who underwent coronary artery bypass grafting.

RESULTS

Percent agreement and content validity index coefficients ranged from .90 to 1.00. Repeated measures analyses of variance showed significant changes over time as hypothesized in some of the symptom evaluation and symptom response scores.

CONCLUSION

Support is documented for both content validity and responsiveness of the CSS.

Patterns of recovery following percutaneous coronary intervention: a pilot study

Percutaneous coronary intervention (PCI) is the most common type of cardiac revascularization performed. However, there has been limited research examining the recovery of PCI patients after their hospital discharge. This descriptive, longitudinal study examined patterns of recovery (cardiac symptoms experienced, impact of cardiac symptoms on physical functioning and enjoyment of life, postprocedure problems experienced, and functioning) of 37 PCI patients at 2, 4, and 6 weeks following PCI. Fatigue was the most frequent and persistent symptom, and significantly, F(2, 26) = 3.6, p < .05, it impacted physical functioning at 4 weeks following PCI. Both physical and psychosocial functioning improved over time. Coronary restenosis and heart rhythm disturbance were the most common self-reported heart-related problems. Understanding normal variation in recovery patterns can assist clinicians in developing interventions to facilitate optimal outcomes.

Development of a self-efficacy scale for mammography

Mammography screening has been demonstrated to decrease mortality from breast cancer. Although adherence rates have increased, there is still a need to increase annual screening. Self-efficacy is a construct that has been found useful in predicting behaviors. Measurement of self-efficacy needs to be specific to the behavior and to have good validity and reliability. The purpose of this study is to describe development of a self-efficacy instrument to measure confidence in obtaining a mammogram. Bandura's model guided item development. Construct validity was measured using confirmatory factor analysis and logistic regression. Cronbach alpha was used to test internal consistency reliability. A Cronbach alpha coefficient of .87 was obtained. The mammography self-efficacy scale evidenced content and construct validity.

Evaluation of outcomes in Psychiatric Consultation-Liaison Nursing practice

This report describes and evaluates the current status of outcome analysis in Psychiatric Consultation-Liaison Nursing (PCLN) and offers suggestions for future development. The status of outcome evaluation generally in psychiatric nursing is described with attention given to the scope of practice of PCLN and outcomes used by psychiatric consultation-liaison nurses (PCLNs) to evaluate their interventions. An evaluation framework based on Donabedian's paradigm of structure, process, and outcome is presented and its applicability shown to PCLN. This framework is further explicated with regard to a review of published studies of PCLN within the outcome domains of cost reduction, satisfaction with services, changes in clinical status, and perceptions of work environment. Finally, recommendations for further development of outcomes in PCLN are offered, based on the strengths and limitations of the extant literature.

Selecting outcome parameters in studies aimed at improving rational use of antibiotics - practical considerations

When designing studies of the optimal use of antimicrobial drugs, it is important to define at an early stage, which outcome parameters to use. It must be clear to which category a parameter to be measured belongs: the structure, the process or a clinical outcome. Attention must be paid to the measurement scales as well as the statistical tests to be used. The outcome measure must be sensitive, specific and reliable. Furthermore, the timeframe chosen for the performance of a study should be validated. Whether process parameters or clinical outcomes are to be preferred depends on the settings and the intended purpose. The essential point is the appropriate choice of outcome measure for the study. Examples drawn from the field of quality of use of antimicrobial drugs are discussed.

Testing the Nursing Outcomes Classification in Three Clinical Units in a Community Hospital

The testing of the Nursing Outcomes Classification (NOC) was the focus of a 4-year study to evaluate the use of the outcomes and measurement scales developed by the Iowa Outcomes Project, a research team at the University of Iowa. Three units in a Midwest community hospital collected data as part of the larger (ten) clinical site study to test the reliability, validity, and sensitivity of the NOC. This article focuses on the results of sensitivity testing obtained in a birth center, behavioral health center, and an oncology unit in a midwestern community hospital. Methods used in this study focused on change scores from initial assessment to post-treatment status for the outcomes studied in each unit. Average baseline ratings, average follow-up ratings, average change scores, and range of change are reported. Thirty-five outcomes are reported for the behavioral health unit, 21 outcomes are reported for the Birth Center, and 8 outcomes for the Oncology Unit. The overall average baseline for the behavioral health unit was 1.89 with an average follow-up rating of 3.22. For the Birth Center, the average baseline rating was 3.23 with an average follow-up score of 3.88. For the Oncology Unit, the average baseline score was 3.01 with an average follow-up rating of 3.12. The results of this study suggest that the NOC outcomes are able to identify change in some outcome ratings through time and in a direction expected for the populations studied in these three specialty units.

An alternative paradigm for clinical nursing research: an exemplar

Effectiveness research is undertaken to evaluate the effects of interventions in achieving desired outcomes when tested in the real-world conditions of everyday practice. Although the randomized clinical trial (RCT) is considered the gold standard for effectiveness research, its feasibility, generalizability, and the clinical utility of its results are being questioned. This state of the science prompted the call for a paradigm shift, characterized by alternative methods for clinical research. The alternative methods attempt to account for clinical realities when conducting research, with the goal of minimizing discrepancies in the perspective and assumptions underlying practice and research. In this article a theory-driven approach to intervention evaluation is presented as a viable alternative paradigm for clinical research. The application of this approach demands changes in four aspects of research: participant selection criteria, assignment to treatment options, delivery of the intervention, and selection of outcome measures. The changes are discussed at the conceptual level and illustrated with examples from an ongoing multisite study aimed at determining the usefulness of this theory-driven approach to intervention evaluation.

The Minnesota Living With Heart Failure Questionnaire: sensitivity to differences and responsiveness to intervention intensity in a clinical population

BACKGROUND

The Minnesota Living With Heart Failure Questionnaire (LHFQ) is a commonly used measure of health-related quality of life in persons with heart failure. Researchers have questioned whether LHFQ is sensitive to subtle differences and sufficiently responsive to clinical interventions because the instrument has demonstrated variable performance in clinical trials.

OBJECTIVES

A secondary analysis was conducted to assess the LHFQ for sensitivity to different clinical states and responsiveness to varying intensities of clinical intervention.

METHODS

A convenience sample of nine experimental or quasi-experimental studies from eight clinical sites in the United States yielded data from 1,136 patients with heart failure. Data in the studies had been collected at enrollment and one, three, and/or six months later. Data were analyzed using descriptive, univariate, and multivariate techniques.

RESULTS

Total and subscale scores on LHFQ were poorer in those with worse New York Heart Association functional class, although there was no difference in LHFQ scores between classes III and IV. No difference in LHFQ scores was found when patients were classified by ejection fraction. Scores improved significantly following hospital discharge, even in those in the control group. Changes in LHFQ scores were greatest in those receiving high intensity interventions.

CONCLUSIONS

The LHFQ is sensitive to major differences in symptom severity but may not be sensitive to subtle differences. It is responsive to high intensity interventions. Investigators are cautioned against using this instrument without first maximizing intervention power or without a control group for comparison.

Assessing efficacy of complementary medicine: adding qualitative research methods to the "Gold Standard"

Randomized controlled trials (RCTs) have an important place in the assessment of the efficacy of complementary and alternative medicine (CAM). However, they address only one, limited, question, namely whether an intervention has-statistically-an effect. They do not address why the intervention works, how participants are experiencing the intervention, and/or how they give meaning to these experiences. Therefore, we argue that the addition of qualitative research methods to RCTs can greatly enhance understanding of CAM interventions. Qualitative research can assist in understanding the meaning of an intervention to patients as well as patients' beliefs about the treatment and expectations of the outcome. Qualitative research also assists in understanding the impact of the context and the process of the intervention. Finally, qualitative research is helpful in developing appropriate outcome measures for CAM interventions. Greater understanding of CAM interventions has the potential to improve health care delivery.

Comprehensive measurement of maternal satisfaction: the modified Mason Survey

A three-stage process was undertaken to identify and modify a tool that was capable of measuring the many aspects of maternal satisfaction relevant to Australian women. First, the scope of maternal satisfaction to be measured was defined by summarizing available literature and surveys purporting to measure maternal satisfaction (including surveys used in maternity services in New South Wales). The multidimensional nature of maternal satisfaction was confirmed, with 16 core aspects (common to the literature and local surveys) and nine additional unique aspects of maternal satisfaction being identified. Second, these core and additional aspects were used to examine the comprehensiveness of the Mason Survey, a survey recommended by the National Health and Medical Research Council of Australia for use in maternity services. Eighty-eight per cent of the core and additional aspects (22/25) were found to be present in the Mason Survey. Third, an expert panel further modified the Mason Survey by removing items not applicable to the Australian context. The modified Mason Survey is a comprehensive measure of maternal satisfaction suitable for Australian women and capable of providing valuable information on the quality of services and future planning for maternity services.

Challenges of outcomes research for nurse practitioners

PURPOSE

To describe the numerous methodological challenges nurse practitioners (NPs) face in designing and conducting outcomes research and provide practical tips to implement an outcomes study within an institution.

DATA SOURCES

Review of world wide scientific literature on outcomes research.

CONCLUSIONS

Nurse practitioners must be aware of the challenges of conducting outcomes research. Challenges associated with variable definition, designing outcomes studies, use of data sets, and instrument development and selection must be understood prior to undertaking an outcome study.

IMPLICATIONS FOR PRACTICE

Valuable studies have laid a foundation for evidence of quality care provision by NPs. Now is the time to measure patient outcomes of the NP care longitudinally over significant periods of time.

Designing effective nursing interventions

The purpose of this article is to present issues scientists must consider to design effective experimental interventions. The efforts of nurse-researchers to test diverse interventions are consistent with the central role of interventions for the nursing discipline. Despite the importance of interventions, limited literature has addressed the actual design of these interventions. Many experimental interventions lack content validity, and others are inadequate to affect outcomes. Eight issues to consider in the development of interventions are discussed, including the conceptual basis of the intervention, descriptive research linking key concepts to the proposed outcome, previous intervention literature testing similar or related interventions, the intervention target, intervention specificity/generality, single or bundled interventions, intervention delivery, and intervention dose. Strategies are recommended for designing effective experimental interventions.

Evaluation methods for social intervention

Experimental design is the method of choice for establishing whether social interventions have the intended effects on the populations they are presumed to benefit. Experience with field experiments, however, has revealed significant limitations relating chiefly to (a) practical problems implementing random assignment, (b) important uncontrolled sources of variability occurring after assignment, and (c) a low yield of information for explaining why certain effects were or were not found. In response, it is increasingly common for outcome evaluation to draw on some form of program theory and extend data collection to include descriptive information about program implementation, client characteristics, and patterns of change. These supplements often cannot be readily incorporated into standard experimental design, especially statistical analysis. An important advance in outcome evaluation is the recent development of statistical models that are able to represent individual-level change, correlates of change, and program effects in an integrated and informative manner.

Measuring outcomes in surgical patients

The current emphasis on quality of healthcare, cost effectiveness, and consumer satisfaction demands a better understanding of the relationship between the process of care and the outcomes of care. As patients become more active in defining healthcare quality, outcome measures are becoming increasingly patient focused. To meet these new demands for understanding the process-outcomes relationship, there exists a tremendous need for physician involvement in developing outcomes assessment programs. Such programs are best designed through the cooperative efforts of clinicians and outcomes statisticians. Advances in outcomes assessment will require a combination of increased precision in measurement, greater analysis of outliers, and the development of computerized repositories of clinical and health status data.

Maintaining study validity in a changing clinical environment

BACKGROUND

Nurse scientists who conduct intervention research in a variety of clinical settings find themselves facing numerous challenges posed by today's changing and sometimes complex health care environment. Maintaining study validity thus becomes a major focus of interventional research, but existing literature does not fully address challenges to study validity nor offer potential solutions.

OBJECTIVES

The purposes of this paper are to 1) discuss methodologic challenges to maintaining study validity of intervention research that is conducted in a changing clinical environment, and 2) share strategies for maximizing study validity.

METHODS

A recently completed intervention study is used as an example to discuss two specific areas that affected study validity, provide examples of selected threats to validity, and outline strategies used to minimize these threats.

RESULTS

Careful definition of goals, thoughtful decision making, and implementation of specific strategies to maintain study validity helped increased the rigor of the research.

CONCLUSIONS

Investigators conducting intervention research in changing clinical settings can reduce threats to study validity and increase design rigor by considering clinical realities (e.g., clinician-researcher role conflict) when making methodologic decisions, becoming familiar with the setting, and involving clinicians in the research.

Psychometric testing of fatigue instruments for use with cancer patients

BACKGROUND

Cancer treatment-related fatigue (CRF) is a common side effect of cancer treatment. A problem identified in most reviews of CRF is lack of sound approaches to measurement that are congruent with the conceptualization of CRF as a self-perceived state. The diversity of instruments available to measure fatigue and the lack of comprehensive testing of several promising instruments with cancer patients undergoing treatment provided the rationale for this study. The purpose of this article is to report the results of psychometric testing of several fatigue instruments in patients undergoing cancer treatment.

OBJECTIVES

The aims of this study were to determine the reliability, validity, and responsiveness of each instrument and to determine the ability of each instrument to capture CRF.

METHODS

Existing fatigue instruments with published psychometric information that indicated suitability for further testing were selected and included the Profile of Mood States Short Form fatigue subscale (F_POMS-sf), Multidimensional Assessment of Fatigue (MAF), Lee Fatigue Scale (LFS), and the Multidimensional Fatigue Inventory (MFI). Data were collected at a university-based clinical cancer center and a freestanding comprehensive cancer center. Subjects completed all study instruments, which were presented in random order, at a time when CRF was expected to be high and again when it was expected to be low. A subset of subjects completed the instruments within 48 hours of one of the data collection points when CRF was expected to be relatively unchanged to provide stability data.

RESULTS

Reliability estimates using Cronbach's alpha indicated that all instruments examined had good internal consistency. Test-retest correlations showed good stability for total scores on all the instruments, but some subscales of the LFS and MFI had marginal stability. Factor analysis of all instruments indicated that only the LFS and the F_POMS-sf fully supported their construct validity. All of the instruments showed responsiveness to changes in CRF related to treatment.

CONCLUSIONS

The results of the study provide researchers and clinicians with detailed comparisons of the performance of established fatigue measures in cancer patients undergoing treatment to use when selecting measures of CRF.

Outcome Questionnaire: item sensitivity to change

Although high levels of reliability are emphasized in the construction of many measures of psychological traits, tests that are intended to measure patient change following psychotherapy need to emphasize sensitivity to change as a central and primary property. This study proposes 2 criteria for evaluating the degree to which an item on a test is sensitive to change: (a) that an item changes in the theoretically proposed direction following an intervention and (b) that the change measured on an item is significantly greater in treated than in untreated individuals. Outcome Questionnaire (Lambert et al., 1996) items were subjected to item analysis by examining change rates in 284 untreated control participants and in 1,176 individuals undergoing psychotherapy. Results analyzed through multilevel or hierarchical linear modeling suggest the majority of items on this frequently used measure of psychotherapy outcome meet both criteria. Implications for test development and future research are discussed.

Measuring infant exposure to environmental tobacco smoke

Methods to measure infant exposure to environmental tobacco smoke (ETS) are needed to identify infants at highest risk for ETS-related health problems. The purpose of this study was to validate measures sensitive to changes in levels of infant exposure to ETS and to develop a predictive model of infant exposure to ETS. Fifteen infants of smoking mothers were followed from birth to 6 weeks of age. Exposure to ETS was measured by using a smoking habits questionnaire, cigarette "butt" collection, infant urine nicotine and cotinine levels, and ambient nicotine (personal air monitors). The 24-hour cigarette butt collection was the best predictor of acute (adjusted r2 = .83) and chronic exposure (adjusted r2 = .47) measured by infant urinary nicotine and cotinine levels when the infants were 2 weeks of age. Including scores on the smoking habits questionnaire and ambient nicotine levels increased the adjusted r2 to .88 and .61, respectively.

The message of SUPPORT: Study to Understand Prognosis and Preferences for Outcomes and Risks of Treatment. Change is long overdue

The major findings of the Study to Understand Prognosis and Preferences for Outcomes and Risks of Treatment (SUPPORT), a multimillion dollar, multisite investigation of the process of dying in American hospitals, were extremely disappointing to the medical community. The major conclusion of this intervention study was that increased efforts to improve communication about patients' preferences for end-of-life care to physicians did not have a significant impact on the care that is provided in hospitals. In a commissioned series of papers to examine the conclusions of the study, numerous factors were identified as the possible reasons for the SUPPORT findings. Among the factors was the role of nurses in communicating patients' preferences to physicians. Nurses, however, were not participants in the design and conduct of this study nor were they among those who were respondents to the conclusions of SUPPORT. In this manuscript, an analysis of the report of the SUPPORT study itself and the commentaries commissioned by its funding agency are reported. Numerous issues about the scientific rigor of SUPPORT, the perceived roles of nurses in end-of-life decision making, and the need for interdisciplinary collaboration in health care and health care research are presented in an effort to ensure that nurses' contributions to the quality of patient care are recognized, acknowledged, and valued in the future.

Conceptualization and measurement of doing family caregiving well

PURPOSE

To review progress in the conceptualization and measurement of five concepts related to doing family caregiving well: caregiving mastery, self-efficacy, competence, preparedness, and quality. Families are increasingly involved in providing complex care to ill or aged family members at home. Their ability to do caregiving well is vitally important and a focus of nursing practice in many clinical settings.

ORGANIZING FRAMEWORK

Concepts were organized into two groups: those that refer to caregivers' perceptions of how well they are providing care and those that refer to professional assessment of the quality of care provided.

SOURCES

Family caregiving literature from nursing, gerontology, psychology, and social work, 1987-1996.

FINDINGS

There is growing interest in doing family caregiving well. However, research in this area is limited by the current state of development of ideas and measures.

CONCLUSIONS

Two issues that should be addressed to advance research are the perspective taken on doing caregiving well and change over time in doing caregiving well.

Broad-spectrum group treatment for parents bereaved by the violent deaths of their 12- to 28-year-old children: a randomized controlled trial

This study assessed the efficacy of a 10-week broad-spectrum intervention offered to bereaved parents about 4 months after the deaths of their 12--28-year-old children due to accidents, homicide, or suicide. For three outcomes of distress there was a significant interaction between treatment and baseline values for each outcome for mothers both immediately posttreatment and 6 months later. The intervention appeared to be the most beneficial for mothers most distressed at baseline. Fathers showed no immediate benefits of treatment. Further research is needed to investigate these unexpected results for fathers and to further characterize those who benefit from similar programs.

Measuring problem behaviors in dementia: developing a methodological agenda

As many as 90% of persons with dementing illness demonstrate problem behaviors that range from repetitive verbalizations, agitation, and wandering to verbal and physical aggression toward self and others. Reliable and accurate measurement of these behaviors is crucial for tracking illness progression; for monitoring the effects of pharmacologic and behavioral interventions; and for continued investigation into the correlates of caregiver stress, burden, and coping. However, there is no single, universally accepted measure or methodology for operationalizing problem behaviors, and variations in definition and measurement across studies complicate drawing meaningful conclusions about these behaviors. This article is an overview of five factors that have complicated accurate and dependable measurement of problem behaviors in dementia: the shifting domain of problem behaviors, slippage across research constructs, unexplored rater bias, scoring bias, and the absence of benchmarking studies. A methodological agenda is discussed for future investigations in this rapidly growing area of gerontological research.

British studies which measure patient outcome, 1990-1994

In order to assess the context and use of patient-outcome measurement in nursing. British studies reported in Nursing Research Abstracts, published by the Department of Health in the 5-year period between January 1990 and December 1994 which measured patient outcome were retrieved, and analysed in relation to the nursing specialty, intervention and outcome variables, and method of measurement used. A total of 228 studies which measured patient outcome were identified, which included 516 occurrences of patient-outcome measurement. Fifty per cent of studies measured a single outcome variable. Physical health status and psychosocial functioning outcomes accounted for over half of the total number of variables used, with generic well-being measures least frequently used; 38% of the studies utilized existing outcome measurement tools, or researcher-constructed tools which had been tested for reliability and validity; 62% utilized tools constructed specifically for the study or physiological/biochemical measures. There was variation in the frequency of use of multiple outcome variables and existing measurement tools between different clinical specialties. The 228 studies included 119 different outcome-measurement tools/instruments, with only 20 measurement tools used more than once. The analysis identified a large range of patient-outcome variables and measurement tools included in nursing studies, but little coherence in definition and method of measurement between studies.

Outcomes of a nursing intervention for siblings of chronically ill children: a pilot study

PURPOSE

To evaluate the outcomes of a structured, educational, and support group intervention (ISEE, Intervention for Siblings: Experience Enhancement) for siblings of children with chronic illness (cancer, cystic fibrosis, diabetes, and spina bifida), including a session with parents about sibling needs; and to describe sibling and parent perceptions of sibling experiences at home.

DESIGN

One-group, pretest-posttest pilot study.

PARTICIPANTS

A convenience sample of 22 siblings and parents.

SETTING

A Midwestern university medical center.

MAIN OUTCOME MEASURES

Knowledge of Illness Test, parent ratings on a global, single item, 10-point scale.

RESULTS

Sibling test scores increased significantly after intervention, compared to baseline. Parents' average evaluation rating was 9 on a 10-point scale. Parents supported their positive ratings with verbatim descriptions. Sibling and parent perceptions of sibling experiences were congruent, suggesting the sources of potential adjustment problems in siblings, and were consistent with the literature.

CONCLUSIONS

A randomized, clinical trial with a larger sample size is needed to evaluate the intervention further.

Classifying nursing-sensitive patient outcomes

This report describes research at the University of Iowa College of Nursing to develop a comprehensive classification of nursing-sensitive patient outcomes. The Nursing-Sensitive Outcomes Classification (NOC) completes the nursing process elements of the Nursing Minimum Data Set (NMDS). We describe resolution of conceptual and methodological problems that define the inductive approach taken to develop the NOC. Strategies used to develop NOC included review of the literature, clinical databases and instruments; concept analysis; and surveys of nurse experts. Examples of outcomes, definitions, and indicators are presented. The NOC provides standardized patient outcomes for determining the effectiveness of nursing interventions and enables inclusion of these data in data sets for healthcare effectiveness research.

Nursing in project Head Start: improving health

The purpose of this study was to evaluate the effectiveness of a nurse-directed health promotion program in decreasing upper respiratory illness symptoms and injury rates in preschool children attending a Head Start (HS) program. The health promotion program presented to the Head Start staff consisted of signs and symptoms of childhood illnesses, infection control, injury prevention and first aid. The 47 children had their health evaluated by a registered nurse once per week for 4 weeks before the program and once per week for 4 weeks after the program. The children's health was evaluated using the Child Health Assessment Inventory. Symptoms of upper respiratory illness were significantly decreased after the intervention of the program. Injury rates increased, but further data analysis determined that 88% of the injuries had occurred at home.

The effect of body positioning upon maximal oxygenation of patients with unilateral lung pathology

A quasi-experimental, repeated-measures cross-over design study on the effect of body position on oxygenation (SaO2) blood pressure, respiration and pulse in patients with unilateral lung pathology was conducted. Previous research strongly suggests that positioning with the healthy (unaffected) lung in the dependent lateral (down) position is related to improved oxygenation, but knowledge about whether this effect is maintained over time is lacking. The purpose of this investigation was to determine: (1) Is positioning with the unaffected lung in the dependent lateral position related to increased arterial blood saturation levels and decreased blood pressure, pulse and respiration? (2) What is the relationship between the dependent variables--oxygenation saturation levels, blood pressure, pulse and respiration--and the independent variables--body position and time in the position? Thirty-nine patients with unilateral lung pathology were positioned on their sides with the unaffected lung down, on their sides with the affected lung down, and also in semi-Fowler's position. Arterial (SaO2) blood saturation and vital signs were measured at baseline 0, 15 and 30 minutes. There was no statistically significant relationship between oxygenation level or systolic blood pressure. Diastolic blood pressure, respiration and pulse did vary significantly with position.

Psychiatric nursing outcome research: the state of the science

A review of the nursing literature from 1989 to 1994 indicates that few psychiatric nursing studies are published in the major nursing research journals. The psychiatric specialization literature includes a large number of studies that are classified as either outcome studies or could serve as building blocks for future outcome studies. Few studies build on prior research, resulting in a weak scientific basis for evaluating the outcomes of psychiatric nursing care. Strategies for increasing the quantity and quality of psychiatric nursing outcome research are presented.

The contributions of nursing science to social support

Nurse scientists have contributed to the theoretical development of social support through concept refinement, creation of measures, and intervention research. Nevertheless, deficiencies persist pertaining to the conceptualization of the construct and the design of intervention studies. Cultural, technological and political contexts have an effect on social support. The significance of social support, nurses' scholarly contributions, and continuing conceptual and methodological challenges are analysed.

The PREP system of nursing interventions: a pilot test with families caring for older members. Preparedness (PR), enrichment (E) and predictability (P)

The PREP system of nursing interventions, designed to increase preparedness (PR), enrichment (E), and predictability (P) in families providing care to older people, was pilot tested for acceptability and preliminary effectiveness. Eleven family units were assigned to the PREP group and 11 to a standard home health control group. The PREP group scored approximately one SD higher than the control group (p < .05) on the Care Effectiveness Scale, indicating greater preparedness, enrichment, and predictability. Further, on a rating of overall usefulness, the PREP group rated their assistance from PREP nurses (M = 9.75) as significantly higher (p < .01) than the control group rated assistance from the home health nurse or physical therapist (M = 6.57). Although not statistically significant, mean hospital costs for the PREP group ($2,775) were lower than for the control group ($6,929). Results provided support for a full intervention trial.

Nursing intervention studies require outcome measures that are sensitive to change: Part Two

Ohis article is the second and concluding part of a discussion of the importance of sensitivity to change in selecting an outcome measure for a study evaluating a nursing intervention. In Part One of the discussion, (Stewart & Archbold, 1992) the relative lack of attention to measurement sensitivity in the nursing and measurement literature was described. Three factors to consider in selecting an outcome measure for an intervention study were reviewed: the conceptual link between the intervention and the outcome variable, the extent to which the outcome variable is amenable to change, and content validity. In Part Two, four additional factors are discussed: construct validity, distribution of scores on the outcome measure, reliability, and correlational stability over time.