Table 2.
Selected summary statistics of key variables.
| Time period: |
Baseline |
12-month follow-up |
||||
|---|---|---|---|---|---|---|
| Participate in CAs: |
Yes |
No |
Differencea (95% CI) | Yes |
No |
Differencea (95% CI) |
| N (%) | 1523 (54%) | 1297 (46%) | 1664 (59%) | 1156 (41%) | ||
| Outcomes | ||||||
| Physical domain | 65.80 (19.86) | 57.99 (22.80) | 7.82 (6.28–9.35) | 63.88 (18.72) | 55.74 (22.30) | 8.15 (6.69–9.60) |
| (standardised) | 0.26 (0.89) | −0.09 (1.02) | 0.35 (0.28–0.42) | 0.17 (0.90) | −0.22 (1.07) | 0.39 (0.32–0.46) |
| Psychological domain | 73.88 (14.80) | 68.23 (18.27) | 5.65 (4.46–6.84) | 71.15 (14.77) | 65.02 (18.47) | 6.13 (4.96–7.30) |
| (standardised) | 0.24 (0.84) | −0.08 (1.03) | 0.32 (0.25–0.39) | 0.16 (0.88) | −0.20 (1.10) | 0.37 (0.30–0.43) |
| Social relations domain | 71.45 (18.91) | 66.98 (20.42) | 4.46 (3.04–5.89) | 69.24 (18.46) | 65.01 (20.50) | 4.23 (2.84–5.62) |
| (standardised) | 0.15 (0.94) | −0.07 (1.01) | 0.22 (0.15–0.29) | 0.10 (0.95) | −0.12 (1.05) | 0.22 (0.15–0.29) |
| Environmental domain | 77.54 (14.41) | 70.10 (16.46) | 7.44 (6.33–8.55) | 75.27 (14.60) | 68.10 (16.58) | 7.17 (6.09–8.26) |
| (standardised) | 0.31 (0.88) | −0.15 (1.00) | 0.45 (0.39–0.52) | 0.20 (0.90) | −0.25 (1.06) | 0.46 (0.39–0.53) |
| Confounders/matching | ||||||
| Female | 0.52 | 0.51 | 0.02 (−0.15 to 0.05) | NA | ||
| Aged 65–69 years | 0.30 | 0.30 | 0.00 (−0.03 to 0.03) | NA | ||
| Aged 70–74 years | 0.28 | 0.27 | 0.02 (−0.01 to 0.05) | NA | ||
| Aged 75–79 years | 0.22 | 0.21 | 0.01 (−0.02 to 0.04) | NA | ||
| Aged 80–84 years | 0.12 | 0.13 | −0.01 (−0.03 to 0.02) | NA | ||
| Aged 85+ years | 0.07 | 0.09 | −0.02 (−0.04 to 0.01) | NA | ||
| Live alone | 0.34 | 0.36 | −0002 (−0.05 to 0.02) | NA | ||
| Live with spouse | 0.60 | 0.57 | 0.03 (0.00–0.70) | NA | ||
| Live with other | 0.10 | 0.12 | −0.02 (−0.04 to 0.01) | NA | ||
| EQ5D score | 0.78 (0.21) | 0.71 (0.26) | 0.08 (0.06–0.09) | NA | ||
Note. Mean values (standard deviations) are reported. N = 2820.
a
Differences calculated using an independent two-sample t-test, accounting for unequal sample sizes.