Risk Factor	Injured-Exposed	No Injury-Exposed	Injured-Unexposed	No Injury-Unexposed	Odds Ratio	Lower CL	Upper CL
January	71	1192	1704	13539	0.47	0.37	0.6
February	63	1044	1712	13687	0.48	0.37	0.63
March	121	1111	1654	13620	0.9	0.74	1.09
April	140	1288	1635	13443	0.89	0.75	1.07
May	167	1551	1608	13180	0.88	0.75	1.04
June	163	1345	1612	13386	1.01	0.85	1.19
July	146	1375	1629	13356	0.87	0.73	1.04
August	152	1283	1623	13448	0.98	0.82	1.17
September	178	1299	1597	13432	1.15	0.98	1.36
October	160	1306	1615	13425	1.02	0.86	1.21
November	199	1010	1576	13721	1.72	1.46	2.01
December	215	927	1560	13804	2.05	1.75	2.4
Freezing Temperature	506	4040	1269	10691	1.06	0.95	1.18