Risk ratios for psychological distressa associated with lack of reciprocity among the elderly, Okayama, Japan (2010).

AIC: Akaike Information Criteria; CI: confidence interval; RR: risk ratio; SE: standard error.aPsychological distress denotes K6 scores ≥11.bAdjusted for age, sex, educational attainment, frequency of alcohol consumption, smoking status, body mass index, marital status, socioeconomic status, and number of cohabiters.cIndividual-level lack of reciprocity was group-mean centered in Models 3–5.dPer 1-person decrease in the number of “people who help you”.eCommunity-level lack of reciprocity was defined as the proportion of residents reporting lack of reciprocity within the community. We show RRs per 10% increase of the proportion of lack of reciprocity in the community.Risk ratios for psychological distressa associated with lack of reciprocity among the elderly, Okayama, Japan (2010).