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Table 1 Summary of flexible parametric methods used to estimate life expectancy in people with and without intellectual disabilities and T2DM

From: Flexible parametric methods for calculating life expectancy in small populations

Name of method

Approach to analysis

Method 1: Fully stratified

Four individual models for:

(a) Intellectual disabilities and T2DM

(b) intellectual disabilities and no T2DM

(c) no intellectual disabilities and T2DM

(d) no intellectual disabilities and no T2DM

Method 2: Partially stratified

Two individual models for:

(a) Intellectual disabilities

(b) no intellectual disabilities

Interaction between T2DM and age modelled

Method 3: Full model

One model of entire sample population

Interaction between age and intellectual disability and T2DM modelled

Method 4: Full model with adapted knots

One model of entire sample population, but with knots forced to intellectual disability sample (i.e. minority group)

Interaction between age and intellectual disability and T2DM modelled