Trajectory of Psychological Distress Among Infertility Women

Summary

Participation Requirements

Description

A designed data entry system for the current study will be developed to ensure an error-proof process. It is important to inspect data for outliers, wild code, and consistency to maintain the data quality in the pre-analysis data phase. We will assess the amount and pattern of missing values by usin...

A designed data entry system for the current study will be developed to ensure an error-proof process. It is important to inspect data for outliers, wild code, and consistency to maintain the data quality in the pre-analysis data phase. We will assess the amount and pattern of missing values by using descriptive statistics, such as frequency and percentage. The pattern of missing data will be identified and decide whether the missing completely at random or not. The appropriate corresponding method will be adopted for the subsequent statistical analyses. For example, the mean imputation is considered when the percentage of items missing at a given questionnaire is less than 10 %. The mean imputation will be used to replaces a missing value with the item mean when applicable. The comparison between complete case analysis and imputation data will be performed to assess the reliability and validity of the results.

Tracking Information