Table 4.
Hazard ratios (95% confidence intervals) from Cox regression models of death by care status, ONS Longitudinal Study
| Model 1: Care status |
Model 2: + Controls |
Model 3: + Gender interaction |
Model 4: + Age interaction |
Model 5: + Baseline census interaction |
|
|---|---|---|---|---|---|
| Main effects | |||||
| In care | 1.70 (1.49, 1.93) | 1.63 (1.43, 1.86) | 1.69 (1.43, 1.99) | 2.01 (1.53, 2.65) | 1.44 (1.23, 1.69) |
| Baseline age | 0.97 (0.95, 0.99) | 0.97 (0.95, 0.99) | 0.97 (0.95, 0.99) | 0.97 (0.95, 0.99) | |
| Baseline age2 | 1.003 (1.002, 1.004) | 1.003 (1.002, 1.004) | 1.003 (1.002, 1.004) | 1.003 (1.002, 1.004) | |
| Male | 1.64 (1.57, 1.71) | 1.64 (1.57, 1.71) | 1.64 (1.57, 1.71) | 1.64 (1.57, 1.71) | |
| Born outside UK | 1.31 (1.17, 1.46) | 1.31 (1.17, 1.47) | 1.30 (1.16, 1.46) | 1.31 (1.17, 1.47) | |
| Baseline census | |||||
| 1971 (ref) | 1.00 | 1.00 | 1.00 | 1.00 | |
| 1981 | 1.07 (1.00, 1.14) | 1.07 (1.00, 1.14) | 1.07 (1.00, 1.14) | 1.06 (0.99, 1.13) | |
| 1991 | 0.84 (0.77, 0.93) | 0.84 (0.77, 0.93) | 0.85 (0.77, 0.93) | 0.84 (0.76, 0.93) | |
| 2001 | 0.47 (0.40, 0.56) | 0.47 (0.40, 0.56) | 0.47 (0.40, 0.57) | 0.45 (0.38, 0.54) | |
| Number of observations | |||||
| One (ref) | 1.00 | 1.00 | 1.00 | 1.00 | |
| Two | 0.67 (0.62, 0.72) | 0.67 (0.62, 0.72) | 0.67 (0.62, 0.72) | 0.67 (0.62, 0.72) | |
| Interaction terms | |||||
| Care by male gender | 1.10 (0.84, 1.44) | ||||
| Care by age | 0.98 (0.96, 1.00) | ||||
| Care by baseline census | |||||
| In care in 1971 (ref) | 1.00 | ||||
| In care in 1981 | 1.36 (0.99, 1.88) | ||||
| In care in 1991 | 1.34 (0.81, 2.23) | ||||
| In care in 2001 | 3.19 (1.74, 5.86) | ||||
N = 353,601, observations = 491,539.