Table 5.

Comparison of overall infection rates for intestinal parasites by duration of anti-TB treatment of persons with PTB in a study of intestinal parasite co-infection among pulmonary tuberculosis cases without HIV infection in a rural county in China^*

Duration of treatment, months	Person with PTB (n = 369)	No. infections (n = 55)	Infection rate (95% CI)	OR (95% CI)	Adjusted OR (95% CI)†
1	45	6	13.3% (5.0–26.8%)	1.00	1.00
2	43	7	16.3% (6.8–30.7%)	1.26 (0.39–4.12)	1.68 (0.44–6.36)
3	38	7	18.4% (7.7–34.3%)	1.47 (0.45–4.82)	1.26 (0.32–4.91)
4	63	5	7.9% (2.6–17.6%)	0.56 (0.16–1.96)	0.41 (0.10–1.70)
5	79	12	15.2% (8.1–25.0%)	1.16 (0.40–3.35)	1.59 (0.47–5.36)
6	101	18	17.8% (10.9–26.7%)	1.41 (0.52–3.83)	1.36 (0.43–4.26)

^*TB = tuberculosis; PTB = pulmonary tuberculosis; HIV = human immunodeficiency virus; CI = confidence interval; OR = odds ratio. Chi square for trend = 0.23, P = 0.6281.

^†Adjusted for sociodemographic characteristics, health conditions, hygienic habits, and labor in farmlands.