The Effect of Interactivity, Tailoring, and Use Intensity on the Effectiveness of an Internet-Based Smoking Cessation Intervention Over a 12-Month Period: Randomized Controlled Trial

BACKGROUND

eHealth approaches show promising results for smoking cessation (SC). They can improve quit rates, but rigorous research is sparse regarding their effectiveness and the effects of their interactivity, tailoring, and use intensity.

OBJECTIVE

We examined the effectiveness of Techniker Krankenkasse Smoking Cessation Coaching (TK-SCC), an internet-based, tailored, and interactive SC intervention. Our hypotheses were as follows: hypothesis 1, in the intervention group (IG; access to TK-SCC), a clinically relevant number of participants will be abstinent at the 12-month follow-up (T3); hypothesis 2, the number of abstinent participants will be significantly greater in the IG than the control group (CG) at T3; and hypothesis 3, in the IG, more intense use of TK-SCC will be positively associated with abstinence.

METHODS

Individuals who smoke were randomized into the IG (563/1115, 50.49%) or CG (552/1115, 49.51%), which received a noninteractive, nontailored, and information-only web-based intervention. Data were collected before the intervention, at the postintervention time point (T1), at the 4-month follow-up (T2), and at T3. We tested hypothesis 1 through equivalence tests between the IG's success rate and success rates of comparable effective interventions reported in 2 current meta-analyses. For hypothesis 2, we conducted binary logistic regressions. For hypothesis 3, we assigned the IG participants to 1 of 4 user types and used binary logistic regressions with user types as the independent variable and smoking abstinence as the dependent variable.

RESULTS

In the IG, 11.5% (65/563) and 11.9% (67/563) of participants were smoke free at T1 and T3, respectively. These values were statistically equivalent to the effects in the 2 meta-analyses, which reported 9% (z score=0.64, P=.74) and 10.9% (z score=-0.71, P=.24) success rates, respectively. In the CG, 6.2% (34/552) of the participants were smoke free at T1, which increased up to 8.2% (45/552) at T3. The difference between the IG and CG was statistically significant only at T1 (odds ratio [OR] 2.0, 99% CI 1.1 to 3.6; P=.002), whereas the effect was nonsignificant following α error corrections at T3 (OR 1.6, 99% CI 0.9 to 2.7; P=.02). In the IG, constant users of the program became smoke free significantly more often than rare users of the program (T1: OR 15.0, 99% CI 6.1 to 36.9; P<.001; T3: OR 6.5, 99% CI 2.8 to 15.5; P<.001).

CONCLUSIONS

TK-SCC is effective for SC. However, its superiority compared with a minimal SC intervention could not be confirmed in the long term. Insufficient implementation of the techniques used and cotreatment bias could explain this outcome. Higher use intensity of TK-SCC was positively related to abstinence. Therefore, additional efforts to motivate users to adhere to intervention use as intended could improve the intervention's effectiveness.

TRIAL REGISTRATION

German Clinical Trials Register DRKS00020249, Universal Trial Number U1111-1245-0273; https://drks.de/search/de/trial/DRKS00020249.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR2-10.1186/s13063-021-05470-8.

Effects of a Web-Based Lifestyle Intervention on Physical Fitness and Health in Physically Inactive Adults: A Randomized Controlled Trial

Web-based lifestyle interventions are a new area of health research. This randomized controlled trial evaluated the effectiveness of an interactive web-based health program on physical fitness and health. N = 189 healthy adults participated in a 12-week interactive (intervention) or non-interactive (control) web-based health program. The intervention provided a web-based lifestyle intervention to promote physical activity and fitness through individualized activities as part of a fully automated, multimodal health program. The control intervention included health information. Cardiorespiratory fitness measured as maximum oxygen uptake (VO2max) was the primary outcome, while musculoskeletal fitness, physical activity and dietary behavior, and physiological health outcomes were assessed as secondary outcomes (t0: 0 months, t1: 3 months, t2: 9 months, t3: 15 months). Statistical analysis was performed with robust linear mixed models. There were significant time effects in the primary outcome (VO2max) (t0-t1: p = 0.018) and individual secondary outcomes for the interactive web-based health program, but no significant interaction effects in any of the outcomes between the interactive and non-interactive web-based health program. This study did not demonstrate the effectiveness of an interactive compared with a non-interactive web-based health program in physically inactive adults. Future research should further develop the evidence on web-based lifestyle interventions.

Effects of a Web-Based Lifestyle Intervention on Weight Loss and Cardiometabolic Risk Factors in Adults With Overweight and Obesity: Randomized Controlled Clinical Trial

BACKGROUND

The high proportion of people with overweight and obesity has become a worldwide problem in recent decades, mainly due to health consequences, such as cardiovascular diseases, neoplasia, and type 2 diabetes mellitus. Regarding effective countermeasures, the digitization of health services offers numerous potentials, which, however, have not yet been sufficiently evaluated. Web-based health programs are becoming increasingly interactive and can provide individuals with effective long-term weight management support.

OBJECTIVE

The purpose of this randomized controlled clinical trial was to evaluate the effectiveness of an interactive web-based weight loss program on anthropometric, cardiometabolic, and behavioral variables and to compare it with a noninteractive web-based weight loss program.

METHODS

The randomized controlled trial included people who were aged between 18 and 65 years (mean 48.92, SD 11.17 years) and had a BMI of 27.5 to 34.9 kg/m² (mean 30.71, SD 2.13 kg/m²). Participants (n=153) were assigned to either (1) an interactive and fully automated web-based health program (intervention) or (2) a noninteractive web-based health program (control). The intervention program focused on dietary energy density and allowed for dietary documentation with appropriate feedback on energy density and nutrients. The control group only received information on weight loss and energy density, but the website did not contain interactive content. Examinations were performed at baseline (t0), at the end of the 12-week intervention (t1), and at 6 months (t2) and 12 months (t3) thereafter. The primary outcome was body weight. The secondary outcomes were cardiometabolic variables as well as dietary and physical activity behaviors. Robust linear mixed models were used to evaluate the primary and secondary outcomes.

RESULTS

The intervention group showed significant improvements in anthropometric variables, such as body weight (P=.004), waist circumference (P=.002), and fat mass (P=.02), compared with the control group over the course of the study. The mean weight loss after the 12-month follow-up was 4.18 kg (4.7%) in the intervention group versus 1.29 kg (1.5%) in the control group compared with the initial weight. The results of the nutritional analysis showed that the energy density concept was significantly better implemented in the intervention group. Significant differences in cardiometabolic variables were not detected between the 2 groups.

CONCLUSIONS

The interactive web-based health program was effective in reducing body weight and improving body composition in adults with overweight and obesity. However, these improvements were not associated with relevant changes in cardiometabolic variables, although it should be noted that the study population was predominantly metabolically healthy.

TRIAL REGISTRATION

German Clinical Trials Register DRKS00020249; https://drks.de/search/en/trial/DRKS00020249.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR2-10.3390/ijerph19031393.

Effects of a Web-Based Weight Loss Program on the Healthy Eating Index-NVS in Adults with Overweight or Obesity and the Association with Dietary, Anthropometric and Cardiometabolic Variables: A Randomized Controlled Clinical Trial

This randomized, controlled clinical trial examined the impact of a web-based weight loss intervention on diet quality. Furthermore, it was investigated whether corresponding changes in diet quality were associated with changes in measures of cardiovascular risk profile. Individuals with a body mass index (BMI) of 27.5 to 34.9 kg/m2 and an age of 18 to 65 y were assigned to either an interactive and fully automated web-based weight loss program focusing on dietary energy density (intervention) or a non-interactive web-based weight loss program (control). Examinations were performed at baseline (t0), after the 12-week web-based intervention (t1), and after an additional 6 (t2) and 12 months (t3). Based on a dietary record, the Healthy Eating Index-NVS (HEI-NVS) was calculated and analyzed using a robust linear mixed model. In addition, bootstrapped correlations were performed independently of study group to examine associations between change in HEI-NVS and change in dietary, anthropometric, and cardiometabolic variables. A total of n = 153 participants with a mean BMI of 30.71 kg/m2 (SD 2.13) and an average age of 48.92 y (SD 11.17) were included in the study. HEI-NVS improved significantly in the intervention group from baseline (t0) to t2 (p = 0.003) and to t3 (p = 0.037), whereby the course was significantly different up to t2 (p = 0.013) and not significantly different up to t3 (p = 0.054) compared to the control group. Independent of study group, there was a significant negative association between change in HEI-NVS and dietary energy density. A higher total score in HEI-NVS did not correlate with improvements in cardiovascular risk profile. The interactive and fully automated web-based weight loss program improved diet quality. Independent of study group, changes in HEI-NVS correlated with changes in energy density, but there was no association between improvements in HEI-NVS and improvements in cardiovascular risk profile.

Evaluation of an Interactive Web-Based Health Program for Weight Loss-A Randomized Controlled Trial

Personal behavior patterns, such as unhealthy diet and lack of physical activity, lead to the development of overweight and obesity. These are associated with other comorbidities, reduced quality of life, premature frailty and increased mortality. Personalized web-based interventions are promising in inducing behavioral change leading to effective reductions in body weight at relatively low costs. However, the long-term effects have not been thoroughly investigated. This work evaluates the effectiveness of web-based interactive weight loss coaching and compares it to a non-interactive web-based health program. Therefore, a randomized controlled trial (RCT) was implemented, measuring primary and secondary outcomes at four time points (program start; end of the 12-week-program; 6 months after program end, 12 months after program end). The net sample covered 1499 subjects in the intervention group and 1492 in the control group. On average, the IG was 43 years old (±13.6), 80.1% male, and had 86.4 kg body weight (±16.1) at baseline. The CG was 42.7 years old (±13.9), 79.5% male and had a mean body weight of 86.1 (±15.7). Multilevel analyses with fixed effects were carried out both from the perspective of an intention-to-treat (ITT) and a complete cases approach (CCA). In sum, our adjusted models suggest a weight loss of 0.4 kg per time point. At the end of the program, significant differences in weight loss in % to baseline (delta M = 1.8 in the CCA) were observed in favor of the intervention group. From a long-term perspective, no superiority of the intervention group in comparison to the control group could be found. More intensive use of the program was not statistically associated with higher weight loss.

Health Effects of a 12-Week Web-Based Lifestyle Intervention for Physically Inactive and Overweight or Obese Adults: Study Protocol of Two Randomized Controlled Clinical Trials

Web-based lifestyle interventions have attracted considerable research interest. Available evidence on such interventions suggests health-promoting effects, but further research is needed. Therefore, this study aims to investigate short-, medium-, and long-term health effects of a web-based health program ("TK-HealthCoach", TK-HC) offered by a national statutory health insurance fund (Techniker Krankenkasse, TK). The study comprises two randomized controlled clinical trials to evaluate the health goals "Increasing Fitness" (F_clin) and "Losing and Maintaining Weight" (W_clin). A total of n = 186 physically inactive (F_clin) and n = 150 overweight or obese (W_clin) adults will be randomly assigned to a 12-week interactive (TK-HC) or non-interactive web-based health program using permuted block randomization with a 1:1 allocation ratio. Primary outcomes include cardiorespiratory fitness (F_clin) and body weight (W_clin). Secondary outcomes comprise musculoskeletal fitness (F_clin), physical activity and dietary behavior, anthropometry, blood pressure, blood levels, and vascular health (F_clin, W_clin). All outcomes will be measured before and after the 12-week intervention and after a 6- and 12-month follow-up. Additionally, usage behavior data on the health programs will be assessed. Linear mixed models (LMMs) will be used for statistical analysis. Findings of this study will expand the available evidence on web-based lifestyle interventions.

Barriers to utilisation of cancer rehabilitation from the expert's view: A cross-sectional survey

OBJECTIVE

The goal of this study was to investigate barriers to utilisation of cancer rehabilitation by querying a large sample of various professionals in health care with a comprehensive set of barriers.

METHODS

We developed a questionnaire comprising 55 barriers to utilisation of cancer rehabilitation and administered it to four different types of medical, care and social work experts involved in the referral to cancer rehabilitation. An exploratory factor analysis was conducted and the extracted factors were ranked by mean values. Additionally, ANOVAs were calculated to test for group differences.

RESULTS

Our sample (N = 606) consisted of 249 physicians, 194 social workers, 105 nurses and 55 psychologists in Germany. We identified seven barrier-dimensions: low appreciation of rehabilitation by professionals, insufficient coordination, insufficient application procedure, rehabilitation requirements not met, patients' unfulfilled demands, patients' social responsibilities and patients' coping style, with the latter being rated as the most obstructive thereof. Furthermore, we found statistically significant group differences for six of these factors with small- to medium-sized effects.

CONCLUSION

Our results support previous publications implicating the patients' coping style as a barrier. We furthermore found evidence for barriers relating to processes and organisational issues, thereby expanding on the scope of patient-oriented publications. Suggestions for improving patients' health services accessibility are made.

Barrieren der Antragstellung in der Onkologischen Rehabilitation: Eine bundesweite Expertenstudie

Ziel der Studie Aus Perspektive verschiedener Expertengruppen, die in der Versorgung onkologisch Erkrankter tätig sind, werden Barrieren bei der Antragstellung zu onkologischen Rehabilitationsmaßnahmen identifiziert. Darauf aufbauend werden Handlungsempfehlungen zur Optimierung abgeleitet. Die Studie wurde von der Deutschen Rentenversicherung Bund (DRV) gefördert.

Methodik Auf Basis einer Interviewstudie (N=61) wurde ein Fragebogeninstrument mit 55 Items zu möglichen Barrieren im Antragstellungsprozess konzipiert und online eingesetzt. Teilnehmer mit mehr als 33% fehlenden Werten wurden von den Analysen ausgeschlossen. Mittelwertanalysen wurden zur Identifikation der bedeutsamsten Relevanz angewendet. Um übergeordnete Dimensionen zu identifizieren, wurde eine exploratorische Faktorenanalyse durchgeführt.

Ergebnisse Insgesamt wurden 606 Experten aus dem onkologischen Bereich in die Auswertung eingeschlossen. Darunter waren 249 Ärzte, 194 Sozialarbeiter, 105 Pflegefachkräfte / Medizinische Fachangestellte, 55 Psychologen / Psychoonkologen und 3 sonstige Berufsgruppen. Die befragten Experten waren im Mittel 51 Jahre alt (SD=10,4) und seit 17 Jahren (SD=9,8) im onkologischen Bereich tätig. Die Barrieren konnten folgenden 7 faktoranalytisch bestimmten Inhaltsbereichen zugeordnet werden: Krankheitsverarbeitung, Antragsverfahren, Rehafähigkeit, Koordination, soziale Verpflichtungen, Patientenwünsche und Stellenwert der Reha. Die Experten gaben an, dass insbesondere der Wunsch des Patienten nach Normalität, die zu starre Frist für die Anschlussrehabilitation (AHB) und das für Patienten mit Migrationshintergrund schlecht verständliche Antragsverfahren einer Antragstellung entgegenstehen kann. Außerdem wurde darauf hingewiesen, dass die Vermittlung von multimorbiden Patienten in die Rehabilitationseinrichtungen schwierig sei.

Schlussfolgerung Aus der Expertenstudie können folgende Handlungsempfehlungen für einen erleichterten Rehabilitationszugang abgeleitet werden: Optimierung der Koordination zwischen verschiedenen Expertengruppen; Einrichtungen und mit den Kostenträgern, Flexibilisierung der AHB-Frist, Vereinfachung der Antragstellung, Bereitstellung von Anträgen / Informationsmaterialien in weiteren Sprachen, Ausrichtung der Reha-Kliniken auf spezifische Patientengruppen.

[Barriers in the Application Process for Oncological Rehabilitation: Results of a Qualitative Expert Survey]

PURPOSE

In this study, which was funded by the German Federal Pension Fund (DRV), barriers in the application process for oncological rehabilitation services were examined from the perspective of various expert groups.

METHODS

In an exploratory multicentre qualitative cross-sectional study 61 semi-structured interviews with experts working in oncological care were conducted: Physicians (n=26), social workers (n=22), psychologists/psycho-oncologists (n=6), nurses/medical assistants (n=5), administrative staff of the DRV (n=2). In guided interviews the participants were asked about their experiences with rehabilitation applications as well as their estimations and evaluations regarding possible reasons for non-utilisation. The evaluation of the interviews was computerized and based on the qualitative content analysis by Mayring.

RESULTS

The respondents had an average age of 52.51 years (SD=10.06; min=25, max=71) and were working in the consultation or treatment of oncological patients for an average of 19.26 years (SD=10.15; min=1, max=42). In total, 854 statements were coded and assigned to the following three main categories: expert-related, system-related and patient-related barriers. In the first main category, scepticism about the benefits of rehabilitation services and an insufficiently met need for information on the part of experts became the focus of attention. In the main category of system-related barriers, aspects were mentioned that addressed the application procedure, the low availability of, for example, outpatient rehabilitation services and the absence of a functioning referral system. The main category of patient-related barriers included psychosocial factors such as subcategories on the topic of coping with the disease which include the patient's desire to come home, experience everyday life again and the fear of being confronted with the disease.

CONCLUSION

The exploratory study revealed potential barriers in the application process for oncological rehabilitation services from an expert perspective. In particular, the findings form the basis for a multi-dimensional assessment instrument that can be used to analyze the barriers in a standardised way and to derive individual recommendations for action.