BMC Medical Research Methodology

Table 2 Log Likelihood CUSUM chart performance – limits and corresponding ARLs

From: The CUSUM chart method as a tool for continuous monitoring of clinical outcomes using routinely collected data

	p ₀	p ₁	h	IC-ARL_U	IC-ARL_D	Combined IC-ARL	OC-ARL_U	OC-ARL_D	Combined OC-ARL
Nulliparous	0.0060	0.0090	1.0	1730	1030	650	710	550	310
Multiparous	0.0029	0.0043	1.0	3500	2080	1300	1460	1140	640
Nulliparous	0.0060	0.0090	1.5	4420	2250	1490	1300	980	560
Multiparous	0.0029	0.0043	1.5	9390	5240	3360	2710	2005	1150

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ISSN: 1471-2288

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