Estimating population size via sample coverage
Description
Population size estimation based on sample coverage approach for closed capturerecapture models.
Usage
1 
Arguments
z 
the vector of capture histories or ascertainment records. 
method 
the method employed to estimate population size.
method="Indep": population size estimate for independent samples; 
se 
should calculus bootstrap standard error? 
nboot 
the number of bootstrap resampling times. 
Value
population size estimator
Note

se
estimated standard error of the population size estimation based on bootstrap replications, which might vary with trials. 
cil
confidence interval lower limit (using a logtransformation). 
ciu
95% confidence interval upper limit (using a logtransformation). 
Nhat0(Indep)
population size estimate for independent samples; see Equation (9) of Chao et al. (2001). 
Nhat
Population size estimate for sufficiently high sample coverage cases; see Equation (12) of Chao et al. (2001). 
Nhat1
Onestep population size estimate for low sample coverage cases; see Equation (13) of Chao et al. (2001). This estimator is suggested for use when the estimated s.e. of Nhat is relatively large.
References
Chao, A., and Tsay, P. K. (1998). A sample coverage approach to multiplesystem estimation with application to census undercount. Journal of the American Statistical Association, 93: 283293.
Chao, A., Tsay, P. K., Lin, S. H., Shau, W. Y., and Chao, D. Y. (2001). The applications of capturerecapture models to epidemiological data. Statistics in Medicine, 20: 31233157.
Examples
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