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Table 1 Demographic characteristics of pregnant or postpartum women

From: Influenza vaccination during pregnancy and influencing factors in Korea: A multicenter questionnaire study of pregnant women and obstetrics and gynecology doctors

Characteristics Vaccinated (n = 330) Unvaccinated (n = 192) p-value
Maternal age (yrs) (mean ± SD) 33.32 ± 3.85 33.18 ± 4.53 0.069
Gestational age (weeks) (mean ± SD) 31.28 ± 20.27 26.31 ± 9.12 0.002
Pregnancy period    0.002
 ≤ 13 weeks (n, %) 17 (5.2) 25 (13.0)  
14–27 weeks (n, %) 67 (20.3) 45 (23.4)  
 ≥ 28 weeks (n, %) 230 (69.7) 108 (56.3)  
Postpartum (n, %) 16 (4.8) 14 (7.3)  
Nulliparous women (n, %) 219 (66.4) 122 (63.5) 0.514
Assisted reproduction (n, %) 29 (6.6) 19 (9.9) 0.790
Education (college degree or higher) (n, %) 304 (92.1) 168 (87.5) 0.084
Metropolitan residence (n, %) 270 (81.8) 15 (79.2) 0.458
Occupation    0.186
Housewife (n, %) 145 (43.9) 73 (38.0)  
Other than housewife (n, %) 185 (56.1) 119 (62.0)  
Ever received information about influenza vaccination during pregnancy (n, %) 321 (97.3) 155 (80.7)  < 0.001
Source of information     < 0.001
OBGYNa doctor (n, %) 239 (72.4) 83 (43.2)  
Non-OBGYN doctors, public health care, media, friends, or family (n, %) 91 (27.6) 109 (56.8)  
Influenza vaccination in a previous pregnancy (n, %)b 71 (64.5) 34 (54.8) 0.205
  1. aOBGYN, obstetrics and gynecology; bresponses from parous women
  2. Values are presented as mean ± standard deviation or n (%)