Evaluation of Month of Birth in Neuromyelitis Optica Spectrum Disorders (NMSOD) and Multiple Sclerosis (MS)

Table 2

Comparison of numbers of monthly births among study groups.

Month	MS vs. control		NMOSD vs. control		MS vs. NMOSD
	OR (95% CI)		OR (95% CI)		OR (95% CI)
March-April	1.613 (1.324-1.964)	<0.001	1.712 (1.136-2.582)	0.010	1.062 (0.713-1.581)	0.769
April-May	1.162 (0.924-1.460)	0.199	1.082 (0.641-1.828)	0.767	0.932 (0.556-1.562)	0.789
May-June	1.228 (0.986-1.530)	0.066	0.958 (0.561-1.637)	0.876	0.780 (0.460-1.323)	0.356
June-July	0.909 (0.732-1.129)	0.389	1.154 (0.723-1.841)	0.549	1.269 (0.797-2.020)	0.315
July-August	1.253 (1.00-1.571)	0.050	1.228 (0.744-2.026)	0.423	0.979 (0.599-1.602)	0.934
August-September	1.266 (1.067-1.502)	0.007	1.318 (0.905-1.921)	0.150	1.041 (0.719-1.507)	0.831
September-October	0.470 (0.374-0.591)	<0.001	0.309 (0.150-0.636)	0.001	0.658 (0.317-1.363)	0.260
October-November	0.694 (0.522-0.921)	0.012	0.534 (0.246-1.163)	0.114	0.770 (0.353-1.681)	0.512
November-December	0.812 (0.637-1.035)	0.093	1.181 (0.716-1.948)	0.516	1.453 (0.881-2.397)	0.143
December-January	0.731 (0.576-0.927)	0.010	0.592 (0.316-1.109)	0.101	0.809 (0.431-1.519)	0.510
January-February	1.045 (0.812-1.345)	0.734	1.285 (0.757-2.180)	0.353	1.230 (0.729-2.073)	0.438
February-March	0.872 (0.692-1.098)	0.245	0.857 (0.495-1.485)	0.582	0.983 (0.568-1.700)	0.950