The prevalence and contextual correlates of non-communicable diseases among inter-provincial migrants and non-migrants in South Africa

摘要

A composite index of NCD prevalence based on an earlier study, was generated from five variables of NCD in the dataset - diabetes, high blood pressure, stroke, asthma, and cancer based on responses from the respondents at the time of the survey. The questions asked in the NIDS dataset were “Have you ever been told by a doctor, nurse or health care professional that you have stroke, diabetes, high blood pressure, cancer, asthma? The responses to each of the five diseases were Yes/No. Based on the responses, these five variables of NCD was re-categorized as the outcome variable (NCD) which was used in the analysis. Respondents who reported having any or all of the five diseases were classified as having non-communicable disease while respondents who reported not having any of the five diseases were classified as not having non-communicable diseases [13]. The outcome variable for the study was therefore a binary variable of “Non-communicable disease (NCD)” and “No non-communicable disease (No NCD)”.