Table 5.

Prevalence of migraineurs among different job-related categories (shift work)

		Women				Men
Exposure	PR	95% CI	PR	95% CI	PR	95% CI	PR	95% CI
			(fully adjusted)	(fully adjusted)			(fully adjusted)	(fully adjusted)
Job involves
shift work
Never/rarely	1 (ref)	-	1 (ref)	-	1 (ref)	-	1 (ref)	-
Sometimes	1.09	[0.85, 1.39]	0.99	[0.74, 1.31]	0.88	[0.57, 1.38]	0.86	[0.55, 1.34]
Usually	1.02	[0.66, 1.59]	1.00	[0.60, 1.67]	0.83	[0.34, 2.01]	0.79	[0.33, 1.92]
Always	1.35	[1.08, 1.68]	1.45	[1.14, 1.83]	1.142	[0.77, 1.69]	1.08	[0.72, 1.61]
Work involves
night shift work
Never/rarely	1 (ref)	-	1 (ref)	-	1 (ref)	-	1 (ref)	-
Sometimes	0.94	[0.65, 1.35]	0.99	[0.66, 1.50]	1.02	[0.60, 1.73]	1.14	[0.62, 2.11]
Usually	1.07	[0.59, 1.95]	1.07	[0.54, 2.13]	0.96	[0.42, 2.19]	0.97	[0.37, 2.58]
Always	1.33	[0.88, 2.03]	1.46	[0.93, 2.31]	0.90	[0.45, 1.80]	1.00	[0.45, 2.18]