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Table 1 Baseline characteristics of 8957 newly diagnosed pulmonary TB patients in Shandong, China, 2004–2019

From: Association between body mass index and newly diagnosed drug-resistant pulmonary tuberculosis in Shandong, China from 2004 to 2019

Characteristics Total (n = 8957) BMI category (kg/m2) P value
Normal weight TB cases (n = 6417) Underweight TB cases (n = 2121) Overweight TB cases (n = 373) Obese TB cases (n = 46) Underweight group vs normal weight group Overweight group vs normal weight group Obese group vs normal weight group
Age (years)         
0–14 25/8920 (0.28%) 12/6392 (0.19%) 11/2110 (0.52%) 1/372 (0.27%) 1/46 (2.17%) 0.011* 0.521 0.089
15–24 1393/8920 (15.62%) 999/6392 (15.63%) 368/2110 (17.44%) 23/372 (6.18%) 3/46 (6.52%) 0.049* < 0.001*** 0.102
25–44 2258/8920 (25.31%) 1725/6392 (26.99%) 393/2110 (18.63%) 124/372 (33.33%) 16/46 (34.78%) < 0.001*** 0.008** 0.236
45–64 2958/8920 (33.16%) 2187/6392 (34.21%) 607/2110 (28.77%) 148/372 (39.78%) 16/46 (34.78%) < 0.001*** 0.028* 0.936
> 65 2286/8920 (25.63%) 1469/6392 (22.98%) 731/2110 (34.64%) 76/372 (20.43%) 10/46 (21.74%) < 0.001*** 0.254 0.842
Sex         
Female 1522/8957 (16.99%) 1103/6417 (17.19%) 339/2121 (15.98%) 65/373 (17.47%) 15/46 (32.61%) 0.199 0.906 0.006**
Male 7435/8957 (83.01%) 5314/6417 (82.81%) 1782/2121 (84.02%) 308/373 (82.8%) 31/46 (67.39%) 0.199 0.906 0.006**
Cavity         
No 4501/8013 (56.17%) 3205/5689 (56.34%) 1102/1931 (57.07%) 171/349 (49%) 23/44 (52.27%) 0.575 0.007** 0.588
Yes 3512/8013 (43.83%) 2484/5689 (43.66%) 829/1931 (42.93%) 178/349 (51%) 21/44 (47.73%) 0.575 0.007** 0.588
Smoking         
No 5400/7224 (74.75%) 3847/5137 (74.89%) 1266/1725 (73.39%) 261/328 (79.57%) 26/34 (76.47%) 0.217 0.057 0.832
Yes 1824/7224 (25.25%) 1290/5137 (25.11%) 459/1725 (26.61%) 67/328 (20.43%) 8/34 (23.53%) 0.217 0.057 0.832
Drinking         
No 5663/7174 (78.94%) 4015/5013 (80.09%) 1353/1708 (79.22%) 266/329 (80.85%) 29/34 (85.29%) 0.435 0.738 0.449
Yes 1511/7174 (21.06%) 1088/5013 (21.7%) 355/1708 (20.78%) 63/329 (19.15%) 5/34 (14.71%) 0.435 0.738 0.449
Co-morbidity         
Total 941/8957 (10.95%) 678/6417 (10.57%) 179/2121 (8.44%) 73/373 (19.57%) 11/46 (23.91%) 0.005** < 0.001*** 0.003**
Asthma 44/8957 (0.51%) 24/6417 (0.37%) 18/2121 (0.85%) 2/373 (0.54%) 0/46 (0.00%) 0.007** 0.652 1.000
COPD 181/8957 (2.11%) 114/6417 (1.78%) 54/2121 (2.55%) 12/373 (3.22%) 1/46 (2.17%) 0.027** 0.045* 0.563
Bronchiectasis 35/8957 (0.41%) 24/6417 (0.37%) 11/2121 (0.52%) 0/373 (0.00%) 0/46 (0%) 0.366 0.640 1.000
Silicosis 27/8957 (0.31%) 24/6417 (0.37%) 3/2121 (0.14%) 0/373 (0.00%) 0/46 (0.00%) 0.119 0.640 1.000
Diabetes 588/8957 (6.84%) 451/6417 (7.03%) 76/2121 (3.58%) 52/373 (13.94%) 9/46 (19.57%) < 0.001*** < 0.001*** < 0.001***
Hypertension 162/8957 (1.88%) 117/6417 (1.82%) 29/2121 (1.37%) 14/373 (3.75%) 2/46 (4.35%) 0.160 0.017* 0.207
Cancer 19/8957 (0.22%) 10/6417 (0.16%) 6/2121 (0.28%) 3/373 (0.8%) 0/46 (0%) 0.241 0.031* 1.000
HIV/AIDS or other immunocompromised diseases 7/8957 (0.08%) 5/6417 (0.08%) 2/2121 (0.09%) 0/373 (0%) 0/46 (0%) 0.687 1.000 1.000
  1. TB, tuberculosis; BMI, body mass index; COPD, chronic obstructive pulmonary disease; HIV/AIDS, human immunodeficiency virus/acquired immune deficiency syndrome
  2. *P < 0.05;**P < 0.01;***P < 0.001;
  3. Underweight: BMI < 18.5 kg/m2; Normal weight: 18.5 kg/m2 ≥ BMI ≤ 24.9 kg/m2; Overweight: 25 kg/m2 ≥ BMI ≤ 29.9 kg/m2; obese: BMI ≥ 30 kg/m2