Table 5.

Sex-stratified multivariate models for effect of hourly status on hypertension, adjusted for non-linear effects of age. All variables are measured at mid-point of follow-up.

	Male employees				Female employees
	Predicted hourly (Pr > 0.5; n = 10,995) (1,287 cases)		Predicted salaried (Pr < 0.5; n = 1,607) (130 cases)		Predicted hourly (Pr > 0.5; n = 831) (95 cases)		Predicted salaried (Pr < 0.5; n = 1,185) (68 cases)
	Adj OR (95% CI)		Adj OR (95% CI)		Adj OR (95% CI)		Adj OR (95% CI)
Hourly (vs. Salaried)	0.92	(0.85–1.003)	1.16	(0.88–1.52)	1.78	(1.34–2.35)	0.74	(0.53–1.04)
Tenure (per year)	1.013	(1.010–1.017)	0.995	(0.983–1.008)	1.028	(1.013–1.043)	1.019	(1.001–1.036)
Age (per year)	1.03	(1.02 – 1.04)	0.999	(0.97–1.03)	1.012	(0.984 – 1.041)	0.993	(0.96–1.02)
BMI:
Above-median	2.39	(2.22 – 2.58)	2.52	(1.83–3.49)	1.79	(1.39 – 2.30)	2.45	(1.64–3.66)
Below-median	1.00	(ref)	1.00	(ref)	1.00	(ref)	1.00	(ref)
Income (by terlie):
Low	1.22	(1.12 – 1.32)	1.49	(1.13–1.97)	0.94	(0.69 – 1.30)	1.92	(1.36–2.71)
Medium	1.02	(0.94 – 1.11)	1.26	(1.01–1.59)	0.93	(0.67 – 1.29)	2.30	(1.64–3.22)
High	1.00	(ref)	1.00	(ref)	1.00	(ref)	1.00	(ref)
Education:
High school	0.95	(0.87–1.04)	N/A		0.91	(0.66–1.26)	0.64	(0.35–1.16)
More than high school	1.00	(ref)	1.00	(ref)	1.00	(ref)	1.00	(ref)
Race/ ethnicity:
African-American	1.39	(1.28 –1.52)	0.63	(0.33–1.21)	1.47	(1.18–1.84)	1.68	(1.12–2.52)
Hispanic	0.72	(0.61–0.84)	1.002	(0.51–1.96)	1.29	(0.72–2.31)	0.63	(0.25–1.61)
Caucasian	1.00	(ref)	1.00	(ref)	1.00	(ref)	1.00	(ref)
Smoking status:
Current vs. Never	1.04	(0.95–1.14)	1.67	(1.10–2.53)	0.96	(0.70 – 1.32)	1.50	(0.89–2.53)
Prior vs. Never	1.08	(0.99 – 1.18)	2.43	(1.68–3.53)	2.29	(1.68–3.13)	0.94	(0.54–1.63)
Never	1.00	(ref)	1.00	(ref)	1.00	(ref)	1.00	(ref)