Mean (95% confidence interval) cognitive ability at age 7 in the National Child Development Study before and after handling missing data (Analysis A)
Analysis 1: Distribution using all available data (n = 14,407)
Analysis 2: Distribution restricted to wave 9 target population (alive and still living in Great Britain) (n = 12,938)
Analysis 3: Distribution restricted to wave 9 target population and HES linkage consenters who were eligible for linkage (lived in England for at least one wave been W6 and W9) (n = 5,546)
Analysis 4: Distribution restricted to wave 9 respondents within HES linkage consenters who were eligible for linkage (n = 4,928)
Analysis 5: MI analysis using only selected survey predictors of non-response as auxiliary variables, restricted to wave 9 target population, HES linkage consenters who were eligible for linkage and those non-missing for the variable of interest, using information on the variable of interest from wave 9 respondents only (n = 5,546)
Analysis 6: MI analysis using selected HES predictors of non-response in addition to selected survey predictors of non-response as auxiliary variables, restricted to wave 9 target population, HES linkage consenters who were eligible for linkage and those non-missing for the variable of interest, using information on the variable of interest from wave 9 respondents only (n = 5,546)
Analysis 7: MI analysis using only selected HES predictors of non-response as auxiliary variables, restricted to wave 9 target population, HES linkage consenters who were eligible for linkage and those non-missing for the variable of interest, using information on the variable of interest from wave 9 respondents only (n = 5,546)