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. 2015 Aug 10;10(8):e0135425. doi: 10.1371/journal.pone.0135425

Table 1. Basic characteristics of study subjects.

Features Cases (n = 302) Controls (n = 377) P-value
N (%) N (%)
sex
Male 186 (61.6) 230 (61.0) 0.877
Female 116 (38.4) 147 (39.0)
Age (years) 58.0 ± 12.8 56.8 ± 12.5 0.209
≤50, N (%) 42.6 ± 6.1, 94 (31.1%) 42.4 ± 6.0, 132 (35.0%) 0.809
>50, N (%) 65.0 ± 8.1, 208 (68.9%) 64.6 ± 6.9, 245 (65.0%) 0.532