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. 2014 Jul 11;4(7):e005429. doi: 10.1136/bmjopen-2014-005429

Table 2.

Sociodemographic characteristics of the main drug categories

Factor Total numbers Main drug categories
Cardiovascular system Respiratory system Central nervous system Endocrine system Musculoskeletal system
Age (years)
 40–54 2738 1257 (46) 441 (16) 1447 (53) 555 (20) 378 (14)
 55–69 4963 3712 (75) 1131 (23) 2694 (54) 1250 (25) 1003 (20)
 70–84 4459 3807 (85) 1154 (26) 2824 (63) 1010 (23) 703 (16)
 85 and over 715 608 (85) 135 (19) 513 (72) 101 (14) 59 (8)
Gender
 Women 6896 4813 (70) 1510 (22) 4528 (66) 1351 (20) 1260 (18)
 Men 5979 4571 (76) 1351 (23) 2950 (49) 1565 (26) 883 (15)
Deprivation*
 Deprived status 2609 1952 (75) 780 (30) 1705 (65) 695 (27) 474 (18)
 Middle status 7228 5308 (73) 1538 (21) 4184 (58) 1616 (22) 1223 (17)
 Affluent status 2203 1584 (72) 354 (16) 1185 (54) 419 (19) 377 (17)

*Deprivation measured by Index of Multiple of Deprivation, figures in brackets refer to the percentage of each study factor subgroup.