Table 1 Demographics, clinical and radiological characteristics of study participants.

From: Computer-aided interpretation of chest radiography reveals the spectrum of tuberculosis in rural South Africa

Characteristic

Enrolled individuals with CXR

Definite TB

Definite TB trace excluded

Probable TB

No TB

N

9914 (100)

99 (1.0%)

75 (0.8%)

172 (1.7)

9643 (97.3)

Female

6664 (67.2)

49 (49.5)

35 (46.7)

76 (44.2)

6539 (67.8)

Age*

39 (24–59)

51 (31–63.5)

50 (31.5–63.5)

56 (41.8–63.3)

38 (23–58)

HIV positive

2954 (29.8)

41 (41.4)

34 (45.3)

76 (44.2)

2837 (29.4)

On ART (of HIV positive)

2408 (81.5)

34 (82.9)

28 (82.4)

65 (85.5)

2309 (81.4)

History of TB

1196 (12.1)

25 (25.3)

17 (22.7)

110 (64.0)

1061 (11.0)

Current smoker

726 (7.3)

17 (17.2)

14 (18.7)

30 (17.4)

679 (7.0)

Cough currently

677 (6.8)

14 (14.1)

12 (16.0)

39 (22.7)

624 (6.5)

Fever

295 (3.0)

9 (9.1)

7 (9.3)

13 (7.6)

273 (2.8)

Weight loss in prior 6 months

232 (2.3)

10 (10.1)

8 (10.7)

10 (5.8)

212 (2.2)

Night sweat

326 (3.3)

8 (8.1)

6 (8.0)

12 (7.0)

306 (3.2)

Any TB symptom

1056 (10.7)

20 (20.2)

15 (20.0)

45 (26.2)

991 (10.3)

Any lung field abnormality according to radiologist

2002 (20.2)

80 (80.8)

64 (85.3)

171 (99.4)

1751 (18.2)

Chest x-ray diagnostic of TB according to radiologist

202 (2.0)

30 (30.3)

25 (33.3)

172 (100)

0 (0)

CAD4TBv5 scores*

28 (22–41)

63 (44–77.5)

66 (51.5–84)

87 (73–95)

27 (22–40)

CAD4TBv6 scores*

35 (16–46)

61 (48.5–78)

64 (52–78)

78 (68–87)

34 (16–46)

  1. Characteristics are listed among all enrolled participants who underwent chest radiography (n = 9914) and by TB diagnostic group: definite TB (microbiologically confirmed), definite TB, trace excluded (a more stringent group that excludes those whose only microbiological evidence of TB is an Xpert “trace” results), probable TB (radiologically diagnosed). Characteristics are shown as absolute frequencies (relative frequencies in %), or median* (25–75% interquartile range (IQR)) for age and CAD4TB scores.