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Table 2

Incidence of pulmonary tuberculosis estimated by sex, age, and follow-up period between weight loss group and non-weight loss group.

Weight loss Non-weight loss
Variable N Event Person-years Incidence N Event Person-years Incidence IRR* (95% CI)
All 6051 115 32827 3.50 24081 209 138630 1.51 2.32 (2.14, 2.52)
Sex
  Female 2904 36 16360 2.20 11562 61 67358 0.91 2.43 (2.16, 2.73)
 Male 3147 79 16467 4.80 12519 148 71271 2.08 2.31 (2.07, 2.58)
Age group (years)
 20-39 1339 9 8003 1.12 5371 15 32608 0.46 2.44 (2.03, 2.94)
 40-64 2934 41 16521 2.48 11663 67 68377 0.98 2.53 (2.25, 2.85)
 65-84 1778 65 8303 7.83 7047 127 37644 3.37 2.32 (2.02, 2.67)
Follow-up period (months)
< 3 6051 34 1495 22.8 24081 9 6009 1.50 15.2 (13.7, 16.9)
≥ 3 5902 81 31333 2.59 23995 200 132621 1.51 1.71 (1.58, 1.87)

Incidence: per 1000 person-years.

*

IRR (incidence rate ratio): weight loss vs. non-weight loss. (95% confidence interval)