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Table 1 Baseline characteristics of propensity score-matched cohorts

From: Risk of incident chronic obstructive pulmonary disease during longitudinal follow-up in patients with nontuberculous mycobacterial pulmonary disease

 

Before matching

After matching*

Total

(n = 91,803)

Control group

(n = 90,088)

NTM-PD

group

(n = 1,715)

p

Total

(n = 8,575)

Matched control group

(n = 6,860)

NTM-PD group

(n = 1,715)

SMD

Age, years

47 ± 10

47 ± 9

62 ± 11

< 0.001

60 ± 10

60 ± 10

62 ± 11

0.207

Male sex, n (%)

52,344 (57.0)

51,609 (57.3)

735 (42.9)

< 0.001

3,295 (38.4)

2,560 (37.3)

735 (42.9)

0.113

BMI, kg/m2

23.6 ± 3.0

23.6 ± 3.0

21.5 ± 3.0

< 0.001

22.9 ± 2.7

22.0 ± 2.7

21.5 ± 3.0

0.161

Smoking status, n (%)

   

0.383

   

0.099

 Never-smoker

74,595 (81.3)

73,187 (81.2)

1,408 (82.1)

 

7,289 (85.0)

5,881 (85.7)

1,408 (82.1)

 

 Ever-smoker

17,208 (18.7)

16,901 (18.8)

307 (17.9)

 

1,286 (15.0)

979 (14.3)

307 (17.9)

 

Comorbidity

        

 Pulmonary tuberculosis

590 (0.6)

515 (0.6)

75 (4.4)

< 0.001

122 (1.4)

47 (0.7)

75 (4.4)

0.237

 Diabetes mellitus

601 (0.7)

502 (0.6)

99 (5.8)

< 0.001

148 (1.7)

49 (0.7)

99 (5.8)

0.288

 Hypertension

4,182 (4.6)

4,024 (4.5)

158 (9.2)

< 0.001

698 (7.1)

540 (7.9)

158 (9.2)

0.048

 Ischemic heart disease

530 (0.6)

501 (0.6)

29 (1.7)

< 0.001

75 (0.8)

46 (0.7)

29 (1.7)

0.095

 Cerebrovascular disease

564 (0.6)

563 (0.6)

1 (0.1)

< 0.001

57 (0.6)

56 (0.8)

1 (0.1)

0.115

  1. Data are expressed as mean ± standard deviation or number (%)
  2. *Matched with age, sex, BMI, and smoking status
  3. Abbreviations: NTM-PD, nontuberculous mycobacterial pulmonary disease; SMD, standardized mean difference; BMI, body mass index
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Respiratory Research

ISSN: 1465-993X

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