SF-36 component domains: PF, physical function; RP, role limitations due to physical health; RE, role limitations due to emotional problems; VT, energy/fatigue; MH, emotional well-being; SF, social functioning domain; BP, pain; GH, general health; CCI, chronic critical illness. Error bars represent standard error of the mean (SEM). ★, p<0.05 comparing CCI and rapid recovery groups.