Fig. 2
From: Flexible parametric methods for calculating life expectancy in small populations
Comparison between flexible parametric methodsab and Chiang’s abridged life tablecd for estimating life expectancy in small populations ID: Intellectual disability; T2DM: Type 2 diabetes mellitus; CI confidence interval; TVC = age-varying covariate knots. aKnot placements (years): Method 1: Fully stratified: ID & T2DM: 36.8, 53.4, 64.5, 67.9, 75.1; ID & No T2DM: 24.4, 42.5, 55.0, 63.4, 82.3; No ID & T2DM: 50.5, 66.6, 72.8, 77.2, 84.9; No ID & No T2DM: 40.7, 64.8, 73.8, 79.5, 87.4]; Method 2: Partially stratified: ID: 27.0, 43.5, 55.3, 65.0, 81.8 [TVC 47.0, 63.7]; No ID: 42.8, 65.3, 73.5, 79.1, 87.0 [TVC 67.8, 77.9]]; Method 3: Full model: 40.7, 64.4, 73.0, 79.0, 86.9 [TVC 67.0, 77.5]]. bAdditional years expected to live from age 40 years (95% CI): Method 1: Fully stratified: ID & T2DM: 32.9 years (27.6, 39.2); ID & No T2DM: 30.0 years (28.4, 31.7); No ID & T2DM: 36.8 years (35.5, 38.1); No ID & No T2DM: 43.3 years (43.0, 43.7); Method 2: Partially stratified: ID & T2DM: 32.3 years (27.1, 38.4); ID & No T2DM: 30.0 years (28.4, 31.7); No ID & T2DM: 37.0 years (35.8, 38.2); No ID & No T2DM: 43.3 years (43.0, 43.6); Method 3: Full model: ID & T2DM: 32.1 years (27.1, 38.0); ID & No T2DM: 30.0 years (28.4, 31.7); No ID & T2DM: 37.2 years (36.1, 38.3); No ID & No T2DM: 43.3 years (43.0, 43.7). cThe point estimates and confidence intervals for the Chiang’s abridged life table approach represent the additional years expected to live at the start of the 5-year age interval (e.g. at 40 years represents the start of the age interval 40–44 years). The point estimate and confidence intervals at 85 years represent 85+ years. dAdditional years expected to live from age 40 years (95% CI): Chiang: ID & T2DM: 32.9 years (26.2, 39.6); ID & No T2DM: 29.9 years (28.2, 31.7); No ID & T2DM: 37.7 years (36.5, 38.9); No ID & No T2DM: 43.3 years (43.0, 43.7)