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Table 1 Sociodemographic characteristics of primary MDR-TB cases and controls, sex and age (±5 years) matched

From: Factors associated with primary transmission of multidrug-resistant tuberculosis compared with healthy controls in Henan Province, China

Variables Primary MDR-TB cases Controls Wald χ 2 value p-value COR (95%CI)
n (%) n (%)
Total (N)   146 (100.00) 146 (100.00) NA NA NA
Sex Male 97 (66.67) 97 (66.67) NA NA NA
  Female 49 (33.33) 49 (33.33) NA NA NA
Age (years) (mean ± standard deviation) 48 ± 17 48 ± 16 NA NA NA
  [median (min, max)] 48 (18, 79) 49 (18, 77) NA NA NA
Education Middle school and above 83 (56.86) 120 (82.35)    1.00
  Illiterate or elementary school 63 (43.14) 26 (17.65) 6.78 0.0092 4.25 (1.43–12.63)
Single No 97 (66.67) 120 (82.35)    1.00
  Yes 49 (33.33) 26 (17.65) 4.32 0.0377 5.00 (1.10–22.81)
Employment Unemployed 29 (19.61) 20 (13.73)    1.00
  Skilled or unskilled worker 46 (31.37) 57 (39.22) 1.02 0.3132 0.53 (0.15–1.82)
  Migrant worker 37 (25.49) 34 (23.53) 0.17 0.6763 0.76 (0.21–2.79)
  Farmer 34 (23.53) 34 (23.53) 0.35 0.5554 0.62 (0.13–3.01)
Annual income (RMB) >12,000 yuan 26 (17.65) 72 (49.02)    1.00
  ≤12,000 yuan 120 (82.35) 74 (50.98) 8.83 0.0030 6.33 (1.87–21.40)
Area of residence Urban 57 (39.22) 77 (52.94)    1.00
  Rural 89 (60.78) 69 (47.06) 2.24 0.1344 2.00 (0.81–4.96)
Size of living space ≥40 m2 46 (31.37) 86 (58.82)    1.00
  <40 m2 100 (68.63) 80 (41.18) 6.34 0.0188 3.00 (1.28–7.06)
Floor in building of living space Second floor and above 40 (27.45) 83 (56.86)    
  Below the second floor 106 (72.55) 63 (43.14) 7.69 0.0056 4.00 (1.50–10.66)
  1. NOTE: COR: crude odds ratio; CI: confidence interval; NA: not applicable.