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Table 3 Subgroup analysis for the effect of past pulmonary TB history on EQ-5D disutility score

From: Health-related quality of life after pulmonary tuberculosis in South Korea: analysis from the Korea National Health and Nutrition Examination Survey between 2010 and 2018

Subgroup EQ-5D disutility score
OR (95% CI, P) P for interaction
Age   0.033
 40–49 (n = 1394) 1.57 (1.17–2.11, 0.003)  
 50–59 (n = 1950) 1.08 (0.87–1.34, 0.499)  
 60–69 (n = 2184) 1.02 (0.82–1.28, 0.858)  
 ≥ 70 (n = 1732) 1.00 (0.84–1.19, 0.989)  
Sex   0.815
 Male (n = 4066) 1.10 (0.94–1.28, 0.248)  
 Female (n = 3194) 1.06 (0.90–1.24, 0.489)  
Marital status   
 Married (n = 5948) 1.02 (0.89–1.16, 0.805) – (Reference)
 Separated (n = 736) 1.30 (1.02–1.66, 0.032) 0.067
 Divorced (n = 391) 1.08 (0.72–1.61, 0.712) 0.908
 Unmarried (n = 185) 1.98 (1.05–3.73, 0.036) 0.006
Income   0.856
 Low (n = 1635) 1.06 (0.87–1.29, 0.572)  
 Intermediate (n = 3683) 1.02 (0.86–1.21, 0.797)  
 High (n = 1942) 1.08 (0.86–1.35, 0.492)  
Education   0.936
 Elementary (n = 2012) 1.06 (0.89–1.26, 0.506)  
 Middle/high school (n = 3423) 1.14 (0.97–1.34, 0.110)  
 College (n = 1825) 0.95 (0.69–1.32, 0.771)  
Smoking status   0.541
 Non-smoker (n = 3803) 1.03 (0.90–1.18, 0.665)  
 Past smoker (n = 2157) 1.14 (0.90–1.44, 0.276)  
 Current smoker (n = 1300) 1.11 (0.85–1.45, 0.426)  
Severe stress   0.972
 No (n = 5834) 1.08 (0.95–1.23, 0.248)  
 Yes (n = 1426 1.05 (0.84–1.30, 0.681)  
FEV1/FVC   0.660
 ≥ 0.7 (n = 5068) 1.10 (0.96–1.26, 0.180)  
 < 0.7 (n = 2192) 1.03 (0.86–1.25, 0.729)  
  1. ORs and 95% CI were analyzed using multivariable Poisson regression analysis adjusted for age, sex, BMI, marital status, income, education, smoking status, regular walking, regular muscle exercise, severe stress, depressive disorder, FVC, HTN, DM, and cancer. The variable used to divide subgroups was excluded from the analysis
  2. TB, tuberculosis; OR, odds ratio; CI, confidence interval; BMI, body mass index; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; HTN, hypertension; DM, diabetes mellitus