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This study explores the potential modifying effect of age and mediation effect of co-morbidity on the association between land use mix, a measure of neighbourhood walkability, and five-year mortality among the 2424 individuals participating in the year-10 follow-up of the Cognitive Function and Ageing Study in England. Postcodes of participants were mapped onto Lower-layer Super Output Areas, a small area level geographical unit in the UK, and linked to Generalised Land Use data. Cox regression models were fitted to investigate the association. For the younger older age group (75-79 years), the effect of high land use mix on an elevated risk of mortality was mediated by co-morbidity. For older old age groups (80-84, 85+ years), a higher land use mix was directly associated with a 10% lower risk of five-year mortality. The findings suggest differential impacts of land use mix on the health of the younger and older old. [ABSTRACT FROM AUTHOR]

Aims and Background: Recovery capital refers to the resources people can call upon to initiate and sustain alcohol and drug problem resolution. Measuring this phenomenon could help an individual better understand their strengths as well as gauge the impact of any interventions designed to improve recovery capital and / or reduce addiction severity. This study aimed to test the internal consistency, stability reliability, criterion-related concurrent validity and content validity of the Recovery Capital Questionnaire (RCQ).Setting and Participants: Participants (n = 173) accessing community based addiction treatment (n = 108) and residential treatment (n = 65) in England and Scotland completed the RCQ at two time-points one week apart (n = 102) to test stability reliability, and also completed the RCQ alongside measures of quality of life and resilience (n = 152). Content validity was assessed by seven subject matter experts with content validity ratio and index calculated.Findings: Cronbach's Alpha values (internal consistency) included: social α = 0.52 (0.40-62); physical α = 0.73 (0.66-0.78); human α = 0.85 (0.82-0.88); community α = 0.85 (0.82-0.88); RCQ Total α = 0.88 (0.85-90). RCQ stability reliability (r = 0.89) and ICC (0.88) were calculated. Content Validity Index statistic of 0.91 was calculated. Correlations between relevant domains within the RCQ and WHOQOL Bref were found to include: r = 0.44, 0.59, 0.66 and 0.40. Correlations between RCQ and CD-RISC scores were calculated (r = 0.65).Conclusion: The Recovery Capital Questionnaire was found to possess good overall internal consistency and stability reliability. Content validity was found to be strong and the RCQ demonstrated good concurrent validity with a measure of quality of life and a measure of resilience. [ABSTRACT FROM AUTHOR]