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. 2015 Sep 14;5(9):e008599. doi: 10.1136/bmjopen-2015-008599

Table 1.

Number of participants by gender and age group (N=32 022)

Age group Total (%) Male (%) Female (%)
12–19 3086 (9.6) 1617 (10.6) 1469 (8.9)
20–29 4642 (14.5) 2241 (14.7) 2400 (14.5)
30–39 4699 (14.7) 2262 (14.9) 2434 (14.7)
40–49 4889 (15.3) 2397 (15.8) 2488 (15.0)
50–59 5630 (17.6) 2710 (17.8) 2914 (17.6)
60–69 4679 (14.6) 2252 (14.8) 2424 (14.6)
70–79 3054 (9.5) 1354 (8.9) 1697 (10.2)
80 or over 1145 (3.6) 383 (2.5) 758 (4.6)
Total 32 022 (100.0) 15 217 (100.0) 16 597 (100.0)