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Table 3 Mortality rates across explanatory variables

From: High mortality among tuberculosis patients on treatment in Nigeria: a retrospective cohort study

Variable

Number

Number of deaths (%)

Person-months (pm)

Mortality rate per 100 pm (95% CI)

Age group (years)

 15–24

260

25 (9 · 6)

1344 · 0

1 · 86 (1 · 26-2 · 75)

 25–34

395

60 (15 · 2)

1874 · 8

3 · 20 (2 · 49-4 · 12)

 35–44

334

50 (15 · 0)

1512 · 2

3 · 31 (2 · 51-4 · 36)

 45–54

185

57 (30 · 8)

650 · 8

8 · 76 (6 · 76-11 · 36)

 55–64

85

14 (16 · 5)

344 · 5

4 · 06 (2 · 41-6 · 86)

  > 65

72

22 (30 · 6)

251 · 7

8 · 74 (5 · 76-13 · 27)

Gender

 Male

810

147 (18 · 2)

3544 · 7

4 · 15 (3 · 53-4 · 87)

 Female

614

90 (14 · 7)

2891 · 5

3 · 11 (2 · 53-3 · 83)

Residence

 Within Kano

1,014

76 (7 · 5)

5208 · 8

1 · 46 (1 · 17-1 · 83)

 Outside Kano

410

161 (39 · 3)

1227 · 4

13 · 12 (11 · 24-15 · 31)

Referral facility

 DOTS-linked facility

624

34 (5 · 5)

2470 · 7

1 · 05 (0 · 75-1 · 47)

 Non DOTS-linked facility

740

201 (27 · 2)

2907 · 0

6 · 91 (6 · 02-7 · 94)

TB diagnosis

 Bacteriological

468

13 (2 · 8)

2819 · 1

0 · 46 (0 · 27-0 · 79)

 Clinical

956

224 (23 · 4)

3617 · 1

6 · 19 (5 · 43-7 · 05)

TB site

 Pulmonary

936

105 (11 · 2)

4527 · 9

2 · 32 (1 · 92-2 · 81)

 Extra-pulmonary

229

36 (15 · 7)

1146 · 3

3 · 14 (2 · 27-4 · 35)

 Both

223

95 (42 · 6)

719 · 3

13 · 21 (10 · 80-16 · 15)

HIV/ART status

 HIV-

683

111 (16 · 3)

3271 · 4

3 · 39 (2 · 82-4 · 09)

 HIV+ not on ART

478

104 (21 · 8)

1895 · 4

5 · 49 (4 · 53-6 · 65)

 HIV+ on ART

90

7 (7 · 8)

460 · 4

1 · 52 (0 · 72-3 · 19)

 Unknown HIV status

173

15 (8 · 8)

809 · 0

1 · 85 (1 · 12-3 · 08)

Previous TB treatment

 No

1.082

93 (8 · 6)

5340 · 9

1 · 74 (1 · 42-2 · 13)

 Yes

342

144 (42 · 1)

1095 · 3

13 · 15 (11 · 17-15 · 48)

Year of diagnosis

 2010–2011

413

76 (18 · 4)

1721 · 5

4 · 41 (3 · 52-5 · 53)

 2012

321

81 (25 · 2)

1319 · 1

6 · 14 (4 · 94-7 · 63)

 2013

450

53 (11 · 8)

2195 · 3

2 · 41 (1 · 84-3 · 16)

 2014

240

27 (11 · 3)

1200 · 2

2 · 25 (1 · 54-3 · 28)