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Table 1 Characteristics of 446 participants with positive and negative TST results

From: Prevalence of latent tuberculosis infection and predictive factors in an urban informal settlement in Johannesburg, South Africa: a cross-sectional study

Characteristics

 

TST Positive

N (row %)

TST Negative

N (row %)

Total

N (column %)

Age in Years median (IQR)

 

35 (27–45)

29 (22–38)

32 (23–41)

Age group

0–14

9 (18.7)

39 (81.3)

48 (10.8)

15–24

20 (26.3)

56 (73.7)

76 (17.0)

25–34

45 (30.6)

102 (69.4)_

147 (33.0)

35–44

37 (45.1)

45 (54.9)

82 (18.4)

≥45

42 (45.2)

51 (54.8)

93 (20.8)

Sex

Female

86 (32.2)

181 (67.8)

267 (60.4)

Male

65 (37.1)

110 (62.9)

175 (39.6)

HIV status

Positive

23 (32.9)

47 (67.1)

70 (18.1)

Negative

115 (36.3)

202 (63.7)

317 (81.9)

BMI (kg/m2) median (IQR)

 

25 (21–29)

23 (20–29)

24 (20–29)

BMI categories

Normal/underweight

70 (34.8)

131 (65.2)

201 (49.9)

Overweight

39 (41.5)

55 (58.5)

94 (23.3)

Obese

37 (34.3)

71 (65.7)

108 (26.8)

Anaemia

Anaemic

51 (32.3)

107 (67.7)

158 (35.4)

Non-anaemic

102 (35.4)

186 (64.6)

288 (64.6)

Education level

≤ Primary

44 (40.0)

66 (60.0)

110 (28.1)

≥ Secondary

100 (35.4)

181 (64.6)

281 (71.9)

Employment status

Unemployed

96 (36.8)

165 (63.2)

261 (66.6)

Employed

48 (36.6)

83 (63.4)

131 (33.4)

Marital status

Not living with a partner

34 (29.6)

81 (70.4)

115 (61.6)

Living with a partner

75 (44.4)

94 (55.6)

169 (38.4)

Household contact with TB

Yes

14 (58.3)

10 (41.7)

24 (6.2)

No

129 (35.3)

236 ((64.7)

365 (93.8)

Smoking

No

101 (35.0)

188 (65.0)

289 (73.7)

Yes

43 (41.8)

60 (58.2)

103 (26.3)

Alcohol consumption

No

87 (35.2)

160 (64.8)

247 (62.7)

Yes

57 (38.8)

90 (61.2)

147 (37.3)

Household ventilation

Always/Only when warm

13 (50.0)

13 (50.0)

26 (6.6)

(sleep with window open)

Never/No windows

131 (35.6)

237 (64.4)

368 (93.4)

Household SES

Low

43 (29.9)

101 (70.1)

144 (34.0)

Medium

50 (33.8)

98 (66.2)

148 (35.0)

High

51 (38.9)

80 (61.1)

131 (31.0)

Household exposure to

No

115 (36.4)

200 (63.6)

315 (79.9)

secondary smoking

Yes

29 (36.7)

50 (63.3)

79 (20.1)

Household number of

<3

102 (31.3)

224 (68.7)

326 (73.1)

rooms

≥3

51 (42.5)

69 (57.5)

120 (26.9)

Household density

Low (<300/km2)

53 (34.0)

103 (66.0)

156 (35.0)

Medium (300–600/km2)

56 (38.9)

88 (61.1)

144 (32.3)

High (>600/km2)

44 (30.1)

102 (69.9)

146 (32.7)