Table 2 Multiple regression of predictors of OPQOL: ONS Omnibus and Ethnibus samples (ﬁnal models) ONS Omnibus: Ethnibus: Unstandardised B Standardised beta 95% CI (2-tailed t-test) Unstandardised B Standardised beta 95% CI (2-tailed t-test) p Value R e s e a r c h r e p o r t Independent predictor variables Block 1 Self-rated active ageing Block 2 QoL domain self-ratings QOL: health QoL social relationships QoL: independence, control over life, freedom QoL: home and neighbourhood QoL: psychological and emotional well-being QoL: ﬁnancial circumstances QoL: leisure and social activities Block 3 Total number of different social activities done in last month (out of listed 8) Total number of relatives, friends, neighbours who would help with practical tasks Block 4 Self-rated health status, compared to others of same age ADL total score (sum of ability to: walk 400 yards, do heavy housework, shop/carry heavy bags, steps/stairs) Block 5 Age Sex Marital status Housing tenure Constant R2 Adjusted R2 Anova F statistic; p 1.515 0.103 1.531 0.104 1.503 0.097 2.081 0.133 0.730 0.040 1.424 0.084 3.362 0.207 2.047 0.146 0.843 0.112 0.106 0.080 1.289 0.100 0.009 0.003 0.044 0.022 0.612 0.021 0.341 0.027 0.286 0.020 159.694 0.663 0.653 0.523 p Value 2.507 to ( 3.000) 0.003 2.756 to 0.307 ( 2.457) 0.014 2.577 to 0.430 ( 2.751) 0.006 3.231 to 0.931 ( 3.556) 0.0001 1.912 to 0.451 ( 1.214) 0.225ns 2.611 to 0.237 ( 2.356) 0.019 4.366 to 2.358 ( 6.577) 0.0001 3.118 to 0.977 ( 3.757) 0.0001 0.335 to 1.351 (3.259) 0.001 0.035 to 0.177 (2.949) 0.003 0.279 2.298 to ( 2.507) 0.012 0.279 to 0.260 ( 0.069) 0.945ns 0.073 to 0.162 (0.742) 0.458 NS 0.914 to 2.139 (0.788) 0.431 NS 1.046 to 0.364 ( 0.950) 0.342 NS 1.060 to 0.488 ( 0.726) 0.468 NS 1.652 0.167 1.044 0.085 0.213 0.017 0.678 0.055 3.013 0.245 2.033 0.161 1.952 0.158 2.184 0.191 0.401 0.051 0.008 0.005 2.443 2.228 0.001 0.001 0.209 0.071 0.055 0.003 0.182 0.014 0.632 0.069 176.681 0.453 0.430 2.464 to 0.839 ( 3.998) 0.0001 1.980 to 0.109 ( 2.194) 0.029 1.165 to 0.739 ( 0.439) 0.661 NS 1.639 to 0.284 ( 1.386) 0.167 NS 4.022 to 2.004 ( 5.870) 0.0001 3.078 to 0.987 ( 3.821) 0.0001 2.887 to 0.016 ( 4.103) 0.0001 3.093 to 1.275 ( 4.723) 0.0001 1.012 to 0.211 ( 1.288) 0.198 NS 0.136 to 0.120 ( 0.125) 0.900 NS 1.441 3.445 to ( 4.792) 0.0001 0.276 to 0.278 (0.007) 0.994 NS 0.428 to 0.011 ( 1.867) 0.063 NS 1.575 to 1.686 (0.067) 0.947 NS 0.817 to 1.181 (0.358) 0.721 NS 1.326 to 0.061 ( 1.793) 0.074 NS 62.853; 0.0001 19.814; 0.001 ADL, activities of daily living; NS, not signiﬁcant; QOL, Quality of Life. In support of construct (convergent) validity, the OPQOL correlated moderately strongly in the same direction, as hypothesised,7 with self-rated health status (‘compared with others of same age’) in each sample: OPQOL Ethnibus 0.364, ONS 0.543 and QoL follow-up 0.628. The CASP-19 and WHOQOL-OLD correlations in the two cross-sectional samples were also in the same direction and signiﬁcant, although slightly weaker (CASP-19 Ethnibus 0.238, ONS 0.530; WHOQOL- 276 J Epidemiol Community Health 2011;65:273e280. doi:10.1136/jech.2009.087668