Table 3.

OR for regional anesthesia for cesarean delivery (CD) adjusting for week around a Kybele visit.

	OR	95% CI	p-value
Visit: 2013	1.19	0.73, 1.94	0.475
Visit: 2014	1.15	0.71, 1.88	0.567
Visit: June, 2015	1.78	1.11, 2.85	0.016
Visit: Sept., 2015	1.51	0.94, 2.42	0.090
Week: R2	2.57	1.60, 4.14	<0.001
Week: R3	1.96	1.22, 3.16	0.006
Week: R4	1.66	1.01, 2.72	0.046
Week: R5	1.70	1.04, 2.79	0.034

The reference week is the week before a Kybele visit (R1), and the reference year/month is 2012.

OR, odds ratio; 95% CI, 95% confidence interval.

R2 = week during a Kybele visit.

R3 = week after a Kybele visit.

R4 = two weeks after a Kybele visit.

R5 = two months after a Kybele visit.