Table 5. Effect of CTX prophylaxis on TM infection among HIV/AIDS patients receiving ART after propensity score matching.

CTX prophylaxis	Total patients n	TM infection n (%)	Person-years	TM infection /1,000 person-year (95%CI)	HR* (95%CI)	aHR** (95%CI)
Yes	453	18 (3.97)	1,286.58	13.99 (7.69–20.29)	0.44(0.25–0.77)	0.52(0.28–0.96)
No	453	39 (8.61)	1,011.16	38.57 (26.77–50.37)	1	1

*HR: hazard ratio.

**aHR: adjusted hazard ratio, adjusted by CTX use, ART age, gender, marital status, transmission route, initial WHO stage, initial ART regimen, baseline BMI, baseline CD4 cell count, HBV, HCV infection, TB infection in the past year, other opportunistic infections in the past three months (including thrush, hairy leukoplakia, PCP, oesophageal candidiasis, extrapulmonary TB and toxoplasmic encephalitis), and delayed time to ART initiation.