Table 1

Age distribution of the study population by the physical work demands group among men and women

SexPhysical demandsN (%)Mean age (STD)Aged 30 years N (%)Aged 40 years N (%)Aged 50 years N (%)
MenLow305 527 (37.4)45.1 (9.2)11 969 (26.8)52 079 (41.1)52 022 (37.2)
Mid475 102 (58.2)44.8 (9.4)27 826 (62.2)71 891 (56.4)80 964 (57.9)
High35 920 (4.4)42.3 (9.6)4 935 (11.0)3 193 (2.5)6 933 (5.0)
Total816 54944.8 (9.3)44 730127 506139 919
WomenLow310 301 (38.0)44.3 (9.1)18 150 (35.0)52 079 (41.8)54 167 (39.3)
Mid460 010 (57.8)44.6 (9.3)32 072 (61.8)70 814 (56.9)78 411 (56.8)
High25 842 (3.2)45.1 (8.5)1 637 (3.2)1 640 (1.3)5 422 (3.9)
Total796 15344.3 (9.1)51 859124 533138 000