Table 3: Demographic group differences on physical component summary (PCS) scores and mental component summary (MCS) scores.

SF-36 DomainsDemographic variableLevels Mean

PCSSexMale22639.603.00*
Female25436.64
Age65–7422639.603.00*
75+25435.51

MCSSexMale22649.690.74
Female25448.76
Age65–7427550.692.7*
75+20547.19

; .