Table 1.

Univariate Cox proportional hazard regression used to assess if the values of parasitaemia on days 2–10 of infection predict the risk of CM development in Swiss Webster stock, CBA strain and both groups pooled (Swiss Webster and CBA)

	Swiss Webster			CBA			Swiss Webster and CBA
Days postinfection	HR	P-value	95% CI	HR	P-value	95% CI	HR	P-value	95% CI
2	0.204	0.507	0.017–2.364	0.120	0.522	0.0001–96.8	0.186	0.351	0.005–6.870
3	0.804	0.656	0.308–2.098	1.219	0.541	0.649–2.289	1.077	0.786	0.627–1.851
4	1.057	0.455	0.913–1.224	1.155	0.107	0.970–1.376	1.069	0.185	0.969–1.180
5	1.130	0.056	0.986–1.296	1.137	0.134	1.021–1.268	1.084	0.012	1.016–1.158
6	1.104	0.005	1.027–1.187	1.072	0.046	1.000–1.149	1.082	0.0009	1.033–1.134
7	1.088	0.007	1.021–1.158	1.127	<0.0001	1.057–1.202	1.107	<0.0001	1.060–1.156
8	1.047	0.094	0.997–1.100	1.133	0.0004	1.047–1.226	1.070	0.0007	1.030–1.111
9	1.060	0.127	0.993–1.133	1.079	0.186	0963–1.210	1.059	0.054	1.007–1.114
10	1.088	0.133	0.974–1.216	1.067	0.680	0.775–1.469	1.081	0.103	0.991–1.179

HR, Hazard Ratio; 95% CI, 95% Confidence Interval for the Hazard Ratio.