Table 2:

Associations between maximum total hydrocarbon (THC) exposure and risk of type 2 diabetes, with different adjustment sets

		Age adjustmenta			Basic adjustmentb			Full adjustmentc
Full sample (n = 2660)
Max THC (ppm)d	n cases/n total	RR	95% CI	CLRe	RR	95% CI	CLR	RR	95% CI	CLR
< 0.30	29/361	1			1			1
0.30 - 0.99	72/840	1.11	(0.74, 1.68)	2.27	1.06	(0.70, 1.60)	2.29	1.07	(0.71, 1.62)	2.28
1.00 - 2.99	77/802	1.20	(0.80, 1.80)	2.25	1.20	(0.79, 1.81)	2.29	1.23	(0.82, 1.86)	2.27
≥ 3.00	62/657	1.33	(0.88, 2.03)	2.31	1.25	(0.81, 1.92)	2.37	1.28	(0.83, 1.97)	2.37
		Trend test p-value: 0.16			Trend test p-value: 0.26			Trend test p-value: 0.22
Males only (n = 2050)
Max THC (ppm)
< 0.30	14/209	1			1			1
0.30 - 0.99	51/577	1.35	(0.77, 2.37)	3.08	1.27	(0.72, 2.24)	3.11	1.27	(0.72, 2.24)	3.11
1.00 - 2.99	69/672	1.54	(0.89, 2.67)	3.00	1.52	(0.88, 2.63)	2.99	1.54	(0.89, 2.65)	2.98
≥ 3.00	58/592	1.67	(0.96, 2.92)	3.04	1.58	(0.90, 2.77)	3.08	1.61	(0.92, 2.82)	3.07
		Trend test p-value: 0.10			Trend test p-value: 0.13			Trend test p-value: 0.10

^aAdjusted for age with restricted quadratic splines

^bAdjusted for age, sex, race/ethnicity, and education

^cAdjusted for age, sex, race/ethnicity, education, employment status, and health insurance status

^dMaximum total hydrocarbon exposure

^eConfidence limit ratio