Table 1 Detection of pulmonary TB among participants screened in population-based surveillance sites in Lwak and Kibera in Kenya, 2011–2014

Resident population

N

Pop. Screened

n (% of resident pop)

Possible TB cases^a

n (% of pop. screened)

Sputum obtained

n (% of possible TB cases)

Confirmed

TB cases

n (% of those with sputum obtained)

TB detection

rate per 100,000 persons screened (95% CI)

Prevalence ratio (95% CI)

Resident population

N

Pop. Screened

n (% of resident pop)

Possible TB cases^a

n (% of population screened)

Sputum obtained

n (% of possible TB cases)

Confirmed

TB cases

n (% of those with sputum obtained)

TB detection rate per 100,000 persons screened (95% CI)

Prevalence ratio (95% CI)

Overall

13,740

6575 (47.9)

1804 (27.4)

1546 (85.7)

18 (1.2)

274 (162–432)

13,800

5765 (41.8)

4242 (73.6)

607 (14.3)

28 (4.6)

486 (323–701)

 15–34

7816

2613 (33.4)

521 (19.9)

422 (81.0)

4 (0.9)

153 (42–392)

Ref

7565

3315 (43.8)

2399 (72.4)

227 (9.5)

15 (6.6)

452 (254–745)

Ref

  ≥ 35

5924

3962 (66.9)

1283 (32.4)

1124 (87.6)

14 (1.2)

353 (193–592)

2.31 (0.76–7.00)

6235

2450 (39.3)

1843 (75.2)

380 (20.6)

13 (3.4)

531 (283–906)

1.17 (0.56–2.46)

 Female

7617

4716 (61.9)

1289 (27.3)

1107 (85.9)

11 (1.0)

233 (117–417)

Ref

7588

3811 (50.2)

2853 (74.9)

401 (14.1)

12 (3.0)

315 (163–549)

Ref

 Male

6123

1859 (30.4)

515 (27.7)

439 (85.2)

7 (1.6)

377 (152–774)

1.61 (0.63–4.16)

6212

1954 (31.4)

1389 (71.1)

206 (14.8)

16 (7.8)

819 (469–1326)

2.60 (1.23–5.49)

 HIV-Neg

6519

3332 (51.1)

974 (29.2)

850 (87.3)

4 (0.5)

120 (33–307)

Ref

8857

3634 (41.0)

3099 (85.3)

153 (4.9)

3 (2.0)

83 (17–241)

Ref

 HIV-pos

1143

761 (66.6)

235 (30.9)

211 (89.8)

6 (2.8)

788 (290–1708)

6.57 (1.86–23.22)

1716

891 (51.9)

808 (90.7)

437 (54.1)

24 (5.5)

2694 (1733–3982)

32.63 (9.85–108.11)

Unknown

6078

2482 (40.8)

595 (24.0)

485 (81.5)

8 (1.6)

322 (139–634)

2.68 (0.81–8.91)

3227

1240 (38.2)

335 (27.0)

17 (5.1)

1 (5.9)

81 (2–449)

0.98 (0.10–9.38)

Resident population

N

Pop. Screened

n (% of resident pop.)

Possible TB cases^b

n (% of pop. screened)

Sputum obtained

n (% of possible TB cases)

Confirmed

TB cases

n (% of those with sputum obtained)

TB detection

rate per 100,000 persons screened (95% CI)

Prevalence ratio (95% CI)

Resident population

N

Pop. Screened

n (% of resident pop.)

Possible TB cases^b

n (% of population screened)

Sputum obtained

n (% of possible TB cases)

Confirmed

TB cases

n (% of those with sputum obtained)

TB detection

rate per 100,000 persons screened

(95% CI)

Prevalence ratio (95% CI)

Overall

12,864

4616 (35.9)

891 (19.3)

712 (79.9)

14 (2.0)

303 (164–508)

11,448

5997 (52.4)

3258 (54.3)

675 (20.7)

41 (6.1)

684 (491–926)

 15–34

9115

3218 (35.3)

529 (16.4)

410 (77.5)

9 (2.2)

280 (128–530)

Ref

7503

4229 (56.4)

2303 (54.5)

414 (18.0)

24 (5.8)

568 (364–843)

Ref

  ≥ 35

3749

1398 (37.3)

362 (25.9)

302 (83.4)

5 (1.7)

358 (116–833)

1.28 (0.43–3.81)

3945

1768 (44.8)

955 (54.0)

261 (27.3)

17 (6.5)

962 (561–1535)

1.69 (0.91–3.15)

 Female

6947

3220 (46.4)

614 (19.1)

491 (80.0)

9 (1.8)

280 (128–530)

Ref

5693

3743 (65.7)

2106 (56.3)

387 (18.4)

18 (4.7)

481 (285–759)

Ref

 Male

5917

1396 (23.6)

277 (19.8)

221 (79.8)

5 (2.3)

358 (116–834)

1.28 (0.43–3.82)

5755

2254 (38.4)

1152 (51.1)

288 (25.0)

23 (8.0)

1020 (648–1527)

2.12 1.15–3.92)

 HIV-Neg

3084

927 (30.1)

247 (26.6)

194 (78.5)

3 (1.5)

324 (67–943)

Ref

4979

2830 (56.8)

1835 (64.8)

213 (11.6)

16 (7.5)

565 (324–917)

Ref

 HIV-pos

371

149 (40.2)

37 (24.8)

25 (67.6)

6 (24.0)

4027 (1768–7793)

12.44 (3.15–49.22)

662

374 (56.5)

286 (76.5)

158 (55.2)

19 (12.0)

5080 (3086–7820)

8.99 (4.66–17.32)

Unknown

9409

3540 (37.6)

607 (17.1)

493 (81.2)

5 (1.0)

141 (46–329)

0.44 (0.10–1.82)

5799

2793 (48.2)

1137 (40.7)

304 (26.7)

6 (2.0)

215 (79–467)

0.38 (0.15–0.97)