Table 1 Sources of the migration variables and year the data was collected
From: Migration intensity has no effect on peak HIV prevalence: an ecological study
Variable | Source of variable | Years data collected |
|---|---|---|
Internal migration | Â | Â |
 Internal migration rate | Human Development Report, 2009 [28] | 1990-2005 |
 Percent internal migrants | World Development Report, 2009 [31] | 1992-2006 |
 Percent recent internal migrants | World Development Report, 2009 [31] | 1992-2006 |
 Recent urban migration (Women) | Voeten et al. [24] | 1987-2005 |
 Recent urban migration (Men) | Voeten et al. [24] | 1987-2005 |
 Crude migration intensity (5 year) | Bell et al. [33] | 2008-2009 |
 Crude migration intensity (Lifetime) | Bell et al. [33] | 2008-2009 |
 Courgeau’s k index (5 year) | Bell et al. [33] | 2008-2009 |
 Courgeau’s k index (Lifetime) | Bell et al. [33] | 2008-2009 |
International migration | Â | Â |
 Average annual net migration rate | United Nations Department of Economic and Social Affairs: World Population Prospects [34] | 2000-2005 |
 Immigration rate (1960) | Human Development Report, 2009 [28] | 1960 |
 Immigration rate (2005) | Human Development Report, 2009 [28] | 2005 |
 Emigration rate | Human Development Report, 2009 [28] | 2000-2002 |
 International movement rate | Human Development Report, 2009 [28] | 2000-2002 |
Within South Africa | Â | Â |
 Spent ≥ 1 month living in different province | National HIV Prevalence, HIV Incidence, Behaviour and Communication Survey I [35] | 2002 |
 Born in different province | National HIV Prevalence, HIV Incidence, Behaviour and Communication Survey I [35] | 2002 |
 Spent ≥ 1 month away from home in the preceding year | National HIV Prevalence, HIV Incidence, Behaviour and Communication Survey II [36] | 2005 |