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. 2017 Mar 8;8(17):28278–28284. doi: 10.18632/oncotarget.16004

Table 1. Number of individuals for ankylosing spondylitis case and controls.

Variables Case (n = 267) Control (n = 297) Total P*
Sex < 0.001a
 Female 67 (25.1%) 198 (66.7%) 265
 Male 200 (74.9%) 99 (33.3%) 299
 Age, yr (mean ± SD) 31.58 ± 12.28 56.35 ± 9.72 <0.001b

aPearson’s test;

bWelch’s test.