Survival analysis results modelling overall lifestyle score and individual lifestyle variables against risk of nursing home admission
| Factor | Lifestyle risk category | Event frequency | Lifestyle risk group | HR (unadjusted) | HR (adjusted for age and sex only) | HR (adjusted for age, sex and physical impairment only) | HR (fully adjusted)* |
| Smoking | Non-smoker | 13 671 (18.8) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| Previous smoker | 8479 (17.5) | Medium risk | 0.96 (0.93–0.99) | 1.11 (1.08–1.15) | 1.09 (1.06–1.13) | 1.09 (1.06–1.12) | |
| Current smoker | 973 (16.5) | High risk | 0.93 (0.87–0.99) | 1.79 (1.68–1.91) | 1.65 (1.55–1.76) | 1.55 (1.45–1.66) | |
| Physical activity | ≥300 min MVPA/week | 8074 (13.9) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| 150–299 min MVPA/week | 2892 (16.2) | Medium risk | 1.06 (1.02–1.11) | 1.08 (1.03–1.12) | 1.07 (1.03–1.12) | 1.08 (1.03–1.12) | |
| ≤149 min MVPA/week | 8317 (22.5) | High risk | 1.51 (1.47–1.55) | 1.34 (1.3–1.38) | 1.21 (1.17–1.24) | 1.19 (1.16–1.23) | |
| Sleep | 7–9 hours/day | 14 594 (15.9) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| >5–7 or >9–11 hours/day | 5931 (21.7) | Medium risk | 1.47 (1.43–1.51) | 1.21 (1.18–1.25) | 1.13 (1.10–1.17) | 1.11 (1.08–1.15) | |
| <5 or >11 hours/day | 1255 (32.5) | High risk | 2.48 (2.34–2.63) | 1.61 (1.51–1.71) | 1.35 (1.27–1.43) | 1.29 (1.22–1.38) | |
| Sitting | <7 hours/day | 14 426 (16.7) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| 7–9 hours/day | 3299 (18.3) | Medium risk | 1.14 (1.10–1.18) | 1.10 (1.06–1.14) | 1.05 (1.01–1.09) | 1.05 (1.01–1.09) | |
| >9 hours/day | 2073 (20.4) | High risk | 1.32 (1.26–1.38) | 1.31 (1.25–1.37) | 1.16 (1.11–1.21) | 1.12 (1.07–1.17) | |
| Diet | Diet score>7 (healthiest) | 7610 (17.5) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| Diet score>3–7 | 12 727 (18.3) | Medium risk | 1.07 (1.04–1.10) | 1.05 (1.01–1.08) | 1.01 (0.98–1.04) | 1.00 (0.97–1.03) | |
| Diet score 0–3 (least healthy) | 1993 (17.7) | High risk | 1.09 (1.04–1.15) | 1.15 (1.09–1.21) | 1.08 (1.03–1.14) | 1.02 (0.97–1.08) | |
| Overall lifestyle† | Lifestyle score 9-10 (healthiest) | 3973 (13.4) | Low risk | 1.00 | 1.00 | 1.00 | 1.00 |
| Lifestyle score 6–8 | 13 226 (17.7) | Medium risk | 1.30 (1.25–1.34) | 1.21 (1.17–1.26) | 1.13 (1.09–1.17) | 1.12 (1.08–1.16) | |
| Lifestyle score 0–5 (least healthy) | 3900 (23.7) | High risk | 1.88 (1.80–1.96) | 1.79 (1.71–1.87) | 1.46 (1.39–1.53) | 1.43 (1.36–1.50) |
Results are based on multiple imputation strategy N=127 108.
*Adjusted for age, sex, education, remoteness, Socio-Economic Indexes for Areas (SEIFA), marital status, country of birth, body mass index (BMI), physical impairment and other lifestyle variables.
†Not adjusted for other lifestyle scores since the lifestyle score is a composition of these.