IUI requires ovulation, at least one open fallopian tube, and a semen sample with healthy sperm. Each IUI treatment is referred to as a cycle â the time from the first day of your period to ovulation and insemination and then a pregnancy test two weeks later.
Total survey error - Sources of nonsampling error. 1  The survey literature decomposes nonsampling errors into five general sources or types: specification error, frame error, nonresponse error, measurement error, and processing error. Specification error occurs when the concept implied by the survey question differs from the concept meant to be measured in the survey.
A lack of understanding or awareness of classifying variables is a common cause of errors in scientific literature published by allied health professionals (1). The type of statistical test to be applied to a data set depends on classification of the variable.