The impact of eliminating age inequalities in stage at diagnosis on breast cancer survival for older women

Concordance with urgent referral guidelines in patients presenting with any of six 'alarm' features of possible cancer: a retrospective cohort study using linked primary care records

BACKGROUND

Clinical guidelines advise GPs in England which patients warrant an urgent referral for suspected cancer. This study assessed how often GPs follow the guidelines, whether certain patients are less likely to be referred, and how many patients were diagnosed with cancer within 1 year of non-referral.

METHODS

We used linked primary care (Clinical Practice Research Datalink), secondary care (Hospital Episode Statistics) and cancer registration data. Patients presenting with haematuria, breast lump, dysphagia, iron-deficiency anaemia, post-menopausal or rectal bleeding for the first time during 2014-2015 were included (for ages where guidelines recommend urgent referral). Logistic regression was used to investigate whether receiving a referral was associated with feature type and patient characteristics. Cancer incidence (based on recorded diagnoses in cancer registry data within 1 year of presentation) was compared between those receiving and those not receiving referrals.

RESULTS

48 715 patients were included, of which 40% (n=19 670) received an urgent referral within 14 days of presentation, varying by feature from 17% (dysphagia) to 68% (breast lump). Young patients (18-24 vs 55-64 years; adjusted OR 0.20, 95% CI 0.10 to 0.42, p<0.001) and those with comorbidities (4 vs 0 comorbidities; adjusted OR 0.87, 95% CI 0.80 to 0.94, p<0.001) were less likely to receive a referral. Associations between patient characteristics and referrals differed across features: among patients presenting with anaemia, breast lump or haematuria, those with multi-morbidity, and additionally for breast lump, more deprived patients were less likely to receive a referral. Of 29 045 patients not receiving a referral, 3.6% (1047) were diagnosed with cancer within 1 year, ranging from 2.8% for rectal bleeding to 9.5% for anaemia.

CONCLUSIONS

Guideline recommendations for action are not followed for the majority of patients presenting with common possible cancer features. A significant number of these patients developed cancer within 1 year of their consultation, indicating scope for improvement in the diagnostic process.

Estimating restricted mean survival time and expected life-years lost in the presence of competing risks within flexible parametric survival models

Background

Royston-Parmar flexible parametric survival models (FPMs) can be fitted on either the cause-specific hazards or cumulative incidence scale in the presence of competing risks. An advantage of modelling within this framework for competing risks data is the ease at which alternative predictions to the (cause-specific or subdistribution) hazard ratio can be obtained. Restricted mean survival time (RMST), or restricted mean failure time (RMFT) on the mortality scale, is one such measure. This has an attractive interpretation, especially when the proportionality assumption is violated. Compared to similar measures, fewer assumptions are required and it does not require extrapolation. Furthermore, one can easily obtain the expected number of life-years lost, or gained, due to a particular cause of death, which is a further useful prognostic measure as introduced by Andersen.

Methods

In the presence of competing risks, prediction of RMFT and the expected life-years lost due to a cause of death are presented using Royston-Parmar FPMs. These can be predicted for a specific covariate pattern to facilitate interpretation in observational studies at the individual level, or at the population-level using standardisation to obtain marginal measures. Predictions are illustrated using English colorectal data and are obtained using the Stata post-estimation command, standsurv.

Results

Reporting such measures facilitate interpretation of a competing risks analysis, particularly when the proportional hazards assumption is not appropriate. Standardisation provides a useful way to obtain marginal estimates to make absolute comparisons between two covariate groups. Predictions can be made at various time-points and presented visually for each cause of death to better understand the overall impact of different covariate groups.

Conclusions

We describe estimation of RMFT, and expected life-years lost partitioned by each competing cause of death after fitting a single FPM on either the log-cumulative subdistribution, or cause-specific hazards scale. These can be used to facilitate interpretation of a competing risks analysis when the proportionality assumption is in doubt.

The Unmet Supportive Care Needs of Arab Australian and Arab Jordanian Cancer Survivors: An International Comparative Survey

BACKGROUND

Research exploring the unmet supportive care needs of Arab cancer survivors is limited, with most conducted with immigrant groups. No study has compared the unmet supportive care needs of immigrant Arab cancer survivors with Arab cancer survivors living in their native country.

OBJECTIVE

To explore the unmet supportive care needs of both Arab Australian and Arab Jordanian cancer survivors.

METHODS

Arab people living in Sydney, Australia, and Amman, Jordan, and diagnosed with cancer within the last 5 years were invited to complete a questionnaire that measured unmet supportive care needs, depression, and language acculturation. Multiple regression analysis was performed to identify predictors of unmet supportive care needs.

RESULTS

Seventy-seven Arab Jordanian and 66 Arab Australian cancer survivors were recruited. Australian participants were older than their Jordanian counterparts (61.5 vs 52.3 years; P < .001) and reported higher levels of overall unmet needs (44.9 vs 36.1; P = .012). Controlling for age and stage of cancer diagnosis, higher levels of depression (β = .34) and living in Australia (β = .26) were significant predictors of unmet needs and explained almost 17% of the variance.

CONCLUSIONS

These findings have extended our understanding of the unmet supportive care needs of Arab cancer survivors and confirm disparities in unmet needs in immigrant populations.

IMPLICATIONS FOR PRACTICE

Greater attention is needed to ensure the supportive care needs are met for immigrant patients with cancer. Additional strategies to address physical and psychological needs are particularly needed in this group.

Geographical differences in risk of advanced breast cancer: Limited evidence for reductions over time, Queensland, Australia 1997-2014

BACKGROUND

Reducing geographical inequalities in breast cancer stage remains a key focus of public health policy. We explored whether patterns of advanced breast cancer by residential accessibility and disadvantage in Queensland, Australia, have changed over time.

METHODS

Population-based cancer registry study of 38,706 women aged at least 30 years diagnosed with a first primary invasive breast cancer of known stage between 1997 and 2014. Multilevel logistic regression was used to examine temporal changes in associations of area-level factors with odds of advanced disease after adjustment for individual-level factors.

RESULTS

Overall 19,401 (50%) women had advanced breast cancer. Women from the most disadvantaged areas had higher adjusted odds (OR = 1.23 [95%CI 1.13, 1.32]) of advanced disease than those from least disadvantaged areas, with no evidence this association had changed over time (interaction p = 0.197). Living in less accessible areas independently increased the adjusted odds (OR = 1.18 [1.09, 1.28]) of advanced disease, with some evidence that the geographical inequality had reduced over time (p = 0.045). Sensitivity analyses for un-staged cases showed that the original associations remained, regardless of assumptions made about the true stage distribution.

CONCLUSIONS

Both geographical and residential socioeconomic inequalities in advanced stage diagnoses persist, potentially reflecting barriers in accessing diagnostic services. Given the role of screening mammography in early detection of breast cancer, the lack of population-based data on private screening limits our ability to determine overall participation rates by residential characteristics. Without such data, the efficacy of strategies to reduce inequalities in breast cancer stage will remain compromised.

Approach and Management of Breast Cancer in the Elderly

Breast cancer is the mostly commonly diagnosed cancer in women both in the United States and worldwide. Although advanced age at diagnosis is associated with more favorable tumor biology, mortality rates are comparatively higher in older adults, possibly attributed to advanced stage at presentation. There are minimal specific treatment-based guidelines in elderly patients with cancer, mostly attributable to their limited inclusion on clinical trials. In addition to the existing evidence from clinical trials and retrospective studies, practitioners need to take into consideration functional status, social support, patient preference, presence of comorbidities, and life expectancy when selecting optimal treatment.