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Table 2 Chao’s estimator for registration system with M occasions and true N=200

From: Correspondence: Some general points regarding Ledberg and Wennberg, BMC Medical Research Methodology 2014 April 27;14:58

   

M=5

M=10

Setting

p 1

p 2

\(\bar s\)

\(\bar f_{0}\)

\(\bar N\)

SD(\(\hat f_{0}\))

\(\bar s\)

\(\bar f_{0}\)

\(\bar N\)

SD(\(\hat f_{0}\))

1

0.1

0.1

82

120

202

52

130

70

200

20

2

0.3

0.05

106

40

156

13

137

29

166

10