Table 2 Multivariate analysis of the factors that influence DTaP-IPV/Hib vaccination (N = 4818)
Variable | Model 1 | Model 2a | ||
|---|---|---|---|---|
aOR (95% CI) | P-value | aOR (95% CI) | P-value | |
Children’s characteristics |  |  |  |  |
 Hukoub (Ref: Rural) | 1.46 (1.24–1.72) |  < 0.001 | 1.42 (1.20–1.67) |  < 0.001 |
 Ethnic group (Ref: Minority) | 1.48 (1.19–1.84) |  < 0.001 | 1.49 (1.19–1.86) |  < 0.001 |
 County-level administrative region (Ref: County/autonomous county) |  |  < 0.001 |  |  < 0.001 |
  Municipal district | 1.96 (1.64–2.34) |  < 0.001 | 1.95 (1.63–2.34) |  < 0.001 |
  County-level city | 1.39 (1.12–1.72) | 0.003 | 1.38 (1.11–1.72) | 0.004 |
 Rank of kindergarten (Ref: Provincial/demonstration level) |  |  < 0.001 |  |  < 0.001 |
  City-county level | 0.64 (0.54–0.77) |  < 0.001 | 0.65 (0.54–0.77) |  < 0.001 |
  Unrated level | 0.77 (0.63–0.95) | 0.016 | 0.79 (0.64–0.98) | 0.028 |
 Type of kindergarten (Ref: Private) | 0.84 (0.71–1.01) | 0.056 | 0.85 (0.71–1.01) | 0.065 |
 Premature delivery (Ref: No) |  | 0.162 |  | 0.110 |
  Yes | 1.05 (0.83–1.34) | 0.675 | 1.08 (0.84–1.37) | 0.552 |
  Undisclosed | 0.67 (0.44–1.03) | 0.067 | 0.65 (0.42–1.00) | 0.048 |
 Basic medical insurance (Ref: Yes) |  | 0.004 |  | 0.005 |
  No | 0.57 (0.38–0.84) | 0.005 | 0.59 (0.39–0.87) | 0.009 |
  Undisclosed | 0.70 (0.47–1.02) | 0.066 | 0.66 (0.45–0.98) | 0.040 |
 Commercial medical insurance (Ref: Yes) |  |  < 0.001 |  |  < 0.001 |
  No | 0.67 (0.57–0.79) |  < 0.001 | 0.69 (0.58–0.81) |  < 0.001 |
  Undisclosed | 0.76 (0.58–0.99) | 0.043 | 0.80 (0.61–1.05) | 0.113 |
 The only child in the family (Ref: No) | 1.16 (1.00–1.35) | 0.047 | 1.12 (0.96–1.30) | 0.151 |
 Complete vaccination for target-age children in immunization program (Ref: No) | 1.84 (1.32–2.57) |  < 0.001 | 1.73 (1.24–2.42) | 0.001 |
Caregivers’ characteristics |  |  |  |  |
 Primary caregiver (Ref: Other) |  |  < 0.001 |  |  < 0.001 |
  Mother | 0.66 (0.54–0.82) |  < 0.001 | 0.65 (0.53–0.80) |  < 0.001 |
  Father | 0.73 (0.54–0.99) | 0.045 | 0.75 (0.55–1.02) | 0.070 |
 Education level (Ref: Middle school and below) |  |  < 0.001 |  |  < 0.001 |
 Senior high school/technical school | 1.43 (1.17–1.74) |  < 0.001 | 1.40 (1.14–1.72) | 0.001 |
  College/associate’s degree | 1.70 (1.39–2.09) |  < 0.001 | 1.66 (1.34–2.04) |  < 0.001 |
  Bachelor’s degree and above | 4.08 (2.30–7.25) |  < 0.001 | 3.68 (2.04–6.63) |  < 0.001 |
  Does not know/unsure | 0.88 (0.57–1.35) | 0.547 | 0.89 (0.58–1.37) | 0.585 |
 Employment status (Ref: Employed) |  | 0.045 |  | 0.036 |
  Unemployed | 0.79 (0.66–0.96) | 0.017 | 0.78 (0.64–0.95) | 0.012 |
  Undisclosed | 0.85 (0.63–1.16) | 0.308 | 0.87 (0.63–1.20) | 0.390 |
 Annual household income (CNY) (Ref: < 30,000) |  | 0.003 |  | 0.002 |
  30,000–49,999 | 0.91 (0.66–1.25) | 0.555 | 0.89 (0.64–1.24) | 0.499 |
  50,000–99,999 | 1.10 (0.82–1.49) | 0.527 | 1.03 (0.76–1.40) | 0.855 |
  100,000–299,999 | 1.06 (0.80–1.41) | 0.667 | 1.00 (0.75–1.33) | 1.000 |
  ≥ 300,000 | 2.26 (1.47–3.47) |  < 0.001 | 2.28 (1.47–3.55) |  < 0.001 |
  Undisclosed | 1.09 (0.86–1.38) | 0.478 | 1.05 (0.83–1.34) | 0.668 |
Confidence | ||||
 Concern about vaccine safety (Ref: No) |  |  | 0.58 (0.50–0.68) |  < 0.001 |
 Concern about vaccine efficacy (Ref: No) |  |  | 1.53 (1.30–1.79) |  < 0.001 |
 Depend on doctors’ vaccination advice (Ref: No) |  |  | 1.07 (0.92–1.25) | 0.363 |
 Concern about vaccine manufacturer (domestic or imported) (Ref: No) |  |  | 2.05 (1.69–2.49) |  < 0.001 |
Convenience | ||||
 Concern about vaccine price (Ref: No) |  |  | 0.73 (0.60–0.88) | 0.001 |
 Concern about immunization schedule (dose and office visit) (Ref: No) |  |  | 1.26 (1.04–1.54) | 0.020 |
 Concern about convenience of vaccination (distance, time, and appointment) (Ref: No) |  |  | 1.14 (0.92–1.41) | 0.237 |
Complacency | ||||
 Caregiver-reported health status for children (Ref: Fair/poor) |  |  | 1.13 (0.93–1.36) | 0.217 |