Fig. 2

Serum vitamin D concentrations in HIV⁺/PTB⁺ (n = 145), HIV⁺/PTB⁻ (n = 139), HIV⁻/TB⁺ (n = 134), and HIV⁻/PTB⁻ (n =133). Serum vitamin D: 25-hydroxyvitamin D; TB: Pulmonary Tuberculosis; HIV = human immunodeficiency virus; +: Positive; −: Negative. The solid horizontal lines () indicate the median vitamin D level for each. The broken horizontal lines (……) demarcate the cutoff points for each vitamin D status category