The Effect of Bradykinin B2 Receptor Polymorphisms on the Susceptibility and Severity of Osteoarthritis in a Chinese Cohort

Table 1

The demographic and clinical characteristics of all subjects.

Variables	Cases (𝑛=245)	Control (𝑛=264)	𝑃
Age (years)	58.6±7.1	58.7±6.4	NS
Sex
Female	148 (60.4%)	155 (58.7%)	NS
Obesity	132 (53.9%)	116 (43.9%)	0.013
Smoker (%)	99 (40.4%)	98 (37.1%)	0.054
History of heavy labor work (%)	65 (26.5%)	61 (23.1%)	0.051