Table 3: Determinants of choosing traditional Korean medicine without adjusting for clustered error.

Odd Ratios95% CI value

Sex (ref = female)1.0410.965–1.1220.291
Age (ref = 20–29)
 30–39 1.2361.036–1.4730.018
 40–49 1.3221.108–1.5780.002
 50–59 0.8660.719–1.0420.129
 60–69 0.8280.684–1.0020.053
 ≥70 0.7340.602–0.8950.002
Marital status
 Married0.9780.850–1.1260.767
 Divorced1.1520.989–1.3410.067
Education (ref = elementary school)
 Middle school0.9030.840–0.9700.006
 High school1.0220.954–1.0940.883
 College or higher1.0891.000–1.1870.050
Residence (ref = rural)1.4411.375–1.509<0.001
Health insurance type (ref = MA)1.3841.273–1.503<0.001
Private health insurance (ref = no)1.0611.003–1.1210.036
Household income (log)0.9720.961–0.983<0.001
Subjective health status1.0021.001–1.0030.001
Number of chronic diseases1.0181.007–1.0290.001
Disease (ref = gastrointestinal)
 Neoplasm0.2090.077–0.5660.002
 Endocrine system0.3700.234–0.584<0.001
 Nervous system12.05410.003–14.526<0.001
 Eye and ear0.7740.533–1.0380.082
 Circulatory system5.2674.429–6.624<0.001
 Respiratory system0.6040.270–1.3520.220
 Skin and subcutaneous tissue1.0060.725–1.3970.969
 Musculoskeletal system20.57917.509–24.187<0.001
 Genitourinary system1.6781.295–2.174<0.001
 Others6.2945.312–7.459<0.001
Smoking (ref = no smoking history)
 Current smoker0.9720.904–1.0450.454
 Past smoker1.3181.065–1.6300.011
Drinking (ref = no)0.9930.955–1.0330.758
Regular exercise (ref = no)0.8530.807–0.901<0.001
Unmet need (ref = no)1.0701.014–1.1300.014

Number of observations179,026
−2 log likelihood−30,715.41
LR test9,775.68 ()
Pseudo 0.1373

ref: reference; MA: Medical Aid; CI: confidence interval.