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Table 4 Hazard ratios (95% confidence intervals) from Cox regression models of death by care status, ONS Longitudinal Study

From: Association of childhood out-of-home care status with all-cause mortality up to 42-years later: Office of National Statistics 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 care1.70 (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) 1.001.001.001.00
  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) 1.001.001.001.00
 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)
  1. N = 353,601, observations = 491,539.