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. 2013 Jun;13(2):301–310. doi: 10.4314/ahs.v13i2.15

Table 5.

Backward multiple linear regression models explaining the HIV epidemic

Explanatory variables Standardized coefficients and variance inflation factors (VIF)

Model 1 VIF Model 2 VIF Model 3 VIF
Contraceptive prevalence rate (X1) −.021 2.140
Physicians density (X2) −.270* 2.468 −.273* 2.407 −.208* 1.656
Proportion of Muslim −.191* 1.319 −.187* 1.247 −.219** 1062
population (X3)
Adolescent fertility rate (X4) .343** 2.093 .348** 1.997 .299** 1.581
Mean year of schooling (X5) .142 3.485 .134 3.210
Adjusted R2 .608 .714 .811
*

Significant at p<.05 level, and

**

Significant at p<.01 level