Table 4.

Birth traits of calves with effects on pneumonia or diarrhea ¹.

Type of Syndrome	Factor	Level	p Value	OR Value	95% Confidence Interval
					Lower Limit	Upper Limit
Pneumonia	Season	Summer vs. Spring	0.26	1.56	0.726	3.33
		Autumn vs. Spring	0.40	0.71	0.32	1.58
		Winter vs. Spring	0.11	0.44	0.16	1.22
	Parity	2 vs. 1	0.96	0.98	0.46	2.12
		3 vs. 1	0.18	1.60	0.81	3.16
	Gestation length	Medium vs. Low	0.17	0.64	0.34	1.20
		High vs. Low	0.04	0.43	0.18	0.99
	Calf birth weight	Medium vs. Low	0.52	0.81	0.43	1.54
		High vs. Low	0.73	0.86	0.78	1.99
	Calving ease score	2 vs. 1	0.19	7.41	0.38	145.34
		3 vs. 1	0.42	1.30	0.68	2.49
Diarrhea	Season	Summer vs. Spring	0.29	0.54	0.17	1.71
		Autumn vs. Spring	0.99	1.00	0.29	3.39
		Winter vs. Spring	0.91	0.93	0.24	3.59
	Parity	2 vs. 1	0.33	1.91	0.52	6.99
		3 vs. 1	0.19	0.55	0.23	1.34
	Gestation length	Medium vs. Low	0.95	0.97	0.39	2.42
		High vs. Low	0.77	1.12	0.37	3.92
	Calf birth weight	Medium vs. Low	0.28	1.63	0.68	3.90
		High vs. Low	0.42	1.58	0.52	4.82
	Calving ease score	3 vs. 1	0.17	0.56	0.24	1.28

¹ For pneumonia and diarrhea, the baseline category for season was spring, for parity it was 1 year, for gestation period and calf birth weight it was the lower-middle quartile, and for calving difficulty it was a score of 1.