Table 2. Odds Ratios from the Stratified Analyses.

		OR (95% CIa)
Total		1.014 (1.003, 1.026) *
Season	Warm (Apr–Sep)	1.025 (1.005, 1.045) *
	Cool (Oct–Mar)	1.009 (0.994, 1.023)
Sex	Male	1.023 (1.009, 1.039) *
	Female	1.002 (0.985, 1.019)
Age (years)	0–9	1.012 (0.968, 1.057)
	10–19	1.073 (1.016, 1.134) *
	20–29	1.004 (0.975, 1.034)
	30–39	0.988 (0.963, 1.014)
	40–49	1.026 (1.003, 1.050) *
	50–59	1.030 (1.003, 1.058) *
	60–69	1.005 (0.968, 1.043)
	70+	1.011 (0.970, 1.054)
Total (Subjects over 18 y of age)
Education	None to Primary School	1.042 (1.016, 1.068) *
	Middle School	1.017 (0.991, 1.044)
	High School	0.993 (0.975, 1.012)
	Undergraduates	1.011 (0.982, 1.041)
	Graduates	1.010 (0.889, 1.147)
	(Missing)
Occupation	White collar	1.017 (0.989, 1.046)
	Blue collar	1.004 (0.974, 1.035)
	Service and sales workers	1.014 (0.988, 1.041)
	Unemployed	1.013 (0.996, 1.031)
	(Missing)
Marital status	Single	0.997 (0.976, 1.019)
	Married	1.015 (0.998, 1.032)
	Divorced	1.020 (0.988, 1.053)
	Bereaving	1.032 (0.992, 1.074)
	(Missing)

^aCI: confidence interval