Table 2 Univariate analysis of chest CT lesion degree (nominal and ordinal variables).

From: A valuable computed tomography-based new diagnostic tool for severe chest lesions in active pulmonary tuberculosis: combined application of influencing factors

Variable

Stage 1, 2 APTB (n = 178)

Stage 3 APTB (n = 285)

χ2 value

P value

Sex, n (%)

Female

45 (25.28)

55 (19.30)

2.316

0.128

Male

133 (74.72)

230 (80.70)

Smoking history, n (%)

No

90 (50.56)

95 (33.33)

13.556

<0.001*

Yes

88 (49.44)

190 (66.67)

Dust exposure history, n (%)

No

156 (87.64)

174 (61.05)

37.831

<0.001*

Yes

22 (12.36)

111 (38.95)

Classification of cases, n (%)

Initial treatmenta

145 (81.46)

177 (62.11)

19.381

<0.001*

Retreatmentb

33 (18.54)

108 (37.89)

Extrapulmonary tuberculosis, n (%)

No

154 (86.52)

235 (82.46)

1.345

0.246

Yes

24 (13.48)

50 (17.54)

Diabetes mellitus, n (%)

No

157 (88.20)

263 (92.28)

2.163

0.141

Yes

21 (11.80)

22 (7.72)

Drug-resistant tuberculosis, n (%)

No

163 (91.57)

249 (87.37)

1.976

0.160

Yes

15 (8.43)

36 (12.63)

Gradec, n (%)

DNA/RNA positived

42 (23.60)

62 (21.75)

3.065

0.690

NC

13 (7.30)

14 (4.91)

1+

50 (28.09)

75 (26.32)

2+

24 (13.48)

47 (16.49)

3+

34 (19.10)

54 (18.95)

4+

15 (8.43)

33 (11.58)

  1. APTB: active pulmonary tuberculosis; CT: computed tomography; NC: The number of colony. aNew cases are defined as not starting anti-TB treatment or being on anti-TB treatment for <1 month; bPreviously treated cases are defined as those anti-TB treated ≥1 month in the past; cSmear grading before treatment; dMycobacterium tuberculosis deoxyribonucleic acid or ribonucleic acid positive; *Significant influence.
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