BMC Medical Research Methodology

Table 4 Coverage probabilities for 95% confidence intervals for CI(t), based on the cumulative incidence estimator ( ${\hat{C I}}_{d i s} (t)$ ) using either Gray's estimate or the Greenwood-type estimate of the variance

From: How to handle mortality when investigating length of hospital stay and time to clinical stability

		Time (days)
Sample Size	Estimator	5	10	15	20	25
1500	Gray	0.945	0.952	0.951	0.956	0.954
	Greenwood	0.945	0.954	0.951	0.957	0.954
750	Gray	0.953	0.958	0.962	0.965	0.961
	Greenwood	0.960	0.963	0.962	0.965	0.961
200	Gray	0.935	0.938	0.943	0.942	0.944
	Greenwood	0.935	0.938	0.953	0.942	0.944
100	Gray	0.961	0.949	0.952	0.955	0.950
	Greenwood	0.961	0.949	0.949	0.955	0.943
50	Gray	0.938	0.950	0.926	0.931	0.938
	Greenwood	0.938	0.950	0.926	0.931	0.938
25	Gray	0.950	0.941	0.936	0.955	0.936
	Greenwood	0.950	0.941	0.936	0.955	0.936

Back to article page

ISSN: 1471-2288

Contact us

General enquiries: journalsubmissions@springernature.com