Table 2. Comparison of the risk of plantar fasciitis between physicians and general population by conditional logistic regression.

				Number (%)	OR (95% CI)
Overall analysis
	Hysicians			2,118 (8.14)	0.660 (0.622–0.699)
	General population			3,079 (11.83)	1 (reference)
Stratified analyses
	Age subgroup
		<35
			Physicians	272 (7.96)	0.765 (0.648–0.904)
			General population	347 (10.15)	1 (reference)
		35–49
			Physicians	1,116 (8.56)	0.713 (0.658–0.774)
			General population	1,512 (11.60)	1 (reference)
		50–64
			Physicians	613 (8.00)	0.583 (0.524–0.648)
			General population	994 (12.96)	1 (reference)
		≥65
			Physicians	117 (6.15)	0.486 (0.385–0.613)
			General population	226 (11.88)	1 (reference)
	Sex
		Male
			Physicians	1,771 (7.95)	0.672 (0.630–0.716)
			General population	2,538 (11.40)	1 (reference)
		Female
			Physicians	347 (9.23)	0.603 (0.523–0.697)
			General population	541 (14.39)	1 (reference)

OR: odds ratio; CI: confidence interval.