Multivariate logistic regression indicated that ORs and 95% CIs of sex, duration of HIV infection, and CD4 nadir were 2.231 (0.919, 5.414) (P = 0.076), 1.057 (1.011, 1.105) (P = 0.014), and 0.998 (0.997, 1.000) (P = 0.041), which were consistent with univariate logistic regression analysis. Here, CD4 is linked to HIV infectious disease.