Table 3 Study population, smear-positive TB cases identified over 12 months and incidence rate per 100,000 persons per year, Hetosa District, Arsi Zone of Oromia Region, Central Ethiopia
Category | Person-year | Smear-positive Pulmonary Tuberculosis (PTB+) (n = 70) | Bacteriologically Confirmed Pulmonary Tuberculosis (BCTB) (n = 76) | ||||
|---|---|---|---|---|---|---|---|
Number of diagnosed PTB+ cases | Incidence rate per 100,000 person-year (95% CI) | Adjusted Incidence Rate Ratio (aIRR) (95% CI) | Number of BCTB | Incidence rate per 100,000 person-year (95% CI) | Adjusted Incidence Rate Ratio (aIRR) (95% CI) | ||
sex | |||||||
Male | 16,741 | 36 | 215 (144.8–285.3) | 1.00 | 38 | 227 (156.7–299.2) | 1.00 |
Female | 16,038.5 | 34 | 212 (140.7–283.2) | 1.22 (0.78–1.93) | 38 | 237 (161.6–312.3) | 1.26 (0.80–1.97) |
Age | |||||||
15–24 | 11,631.5 | 16 | 138 (70.2–205) | 1.00 | 19 | 163(64.1–236.8) | 1.00 |
25–34 | 7,865 | 8 | 102 (31.2–172.2) | 1.30 (0.64–2.67) | 9 | 114 (39.7–189.2) | 1.51(0.73–3.15) |
35–44 | 5,514 | 20 | 363 (203.7–521.7) | 2.40 (1.18–4.55) | 21 | 381(218.0–543.7) | 2.76 (1.38–5.52) |
≥45 | 7,769 | 26 | 335 (206.0–463.3) | 1.66 (1.44–4.91) | 27 | 348 (216.4–478.6) | 3.05 (1.63–5.71) |
Residence | |||||||
Urban | 5,843.5 | 13 | 222 (101.5–343.4) | 1.00 | 16 | 274(139.6–408.0) | 1.00 |
Rural | 26,936 | 57 | 212 (156.7–266.5) | 1.23 (0.71–2.14) | 60 | 223(166.4–279.10 | 1.25 (0.72–2.16) |
History of TB contact | |||||||
NO | 31,138 | 50 | 161 (116.1–205.1) | 1.00 | 56 | 180(132.7–217.6) | 1.00 |
Yes | 1,641.5 | 20 | 1218 (686.4–1752.4) | 4.11 (2.18–7.77) | 20 | 1218(686.4–1752.4) | 5.11 (2.63–9.96) |
Total | 32,779.5 | 70 | 214 (163.5–263.5) | 76 | 232(179.7–283.9) | ||