TABLE 1.

Comparison and names of eight approaches investigated

Method	CC	AC	Selection features	Correlation	Attrition‐adjusted weight
CC	√		√
AC		√	√
CC‐gee	√		√	√
AC‐gee		√	√	√
CC‐ID cluster	√		√	√
AC‐ID cluster		√	√	√
CC‐attr‐w	√		√	√	√
AC‐attr‐w		√	√	√	√

Abbreviations: AC, available case analysis; AC‐attr‐w, attrition‐adjusted weighted analysis accounting for the cluster structure by individuals with available cases; AC‐gee, GEE with available cases; AC‐ID cluster, available case analysis accounting for the cluster structure by individuals; CC, complete case analysis; CC‐attr‐w, attrition‐adjusted weighted analysis accounting for the cluster structure by individuals with complete cases; CC‐gee, GEE with complete cases; CC‐ID cluster, complete case analysis accounting for the cluster structure by individuals.