This case study on Colombia describes how the civil registration and national identification system and the health information system have facilitated progress toward universal health coverage. The study includes a description of Colombia's General Social Health Insurance System (Sistema General...

This paper considers the prediction estimator as an efficient estimator for the population mean. The study may be viewed as an earlier study that proved that the prediction estimator based on the iteratively weighted least squares estimator outperforms the sample mean. The analysis finds that a...