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Table 3 Pregnancy, delivery and postpartum characteristics of participants in this study

From: Case–control study of risk factors for infectious mastitis in Spanish breastfeeding women

Variables Case, n* (%) Control, n* (%) OR 95% CI P-value
Threatened miscarriage      
  No 308 (85.08) 135 (91.22) Reference   0.063
  Yes 54 (14.92) 13 (8.78) 1.82 0.96–3.45  
Breast/nipple pain during pregnancy     
  No 249 (70.94) 117 (80.14) Reference   0.034
  Yes 102 (29.06) 29 (19.86) 1.65 1.04–2.64  
Antibiotics during pregnancy      
  No 271 (77.87) 122 (82.43) Reference   0.252
  Yes 77 (22.13) 26 (17.57) 1.33 0.81–2.18  
Antifungal medication during pregnancy     
  No 317 (89.30) 138 (93.24) Reference   0.170
  Yes 38 (10.70) 10 (6.76) 1.65 0.80–3.41  
Analgesics during pregnancy      
  No 233 (64.36) 105 (71.43) Reference   0.126
  Yes 129 (35.64) 42 (28.57) 1.38 0.91–2.10  
Group B Streptococcus positive test     
  No 278 (79.89) 115 (80.99) Reference   0.781
  Yes 70 (20.11) 27 (19.01) 1.07 0.65–1.76  
Age range at last delivery      
  < 25 5 (1.37) 5 (3.45) Reference   0.305
  25-35 242 (66.12) 95 (65.52) 2.55 0.72–9.00  
  > 35 119 (32.51) 45 (31.03) 2.64 0.73–9.57  
Primiparous/Multiparous      
  Multiparous 113 (30.87) 62 (42.18) Reference   0.015
  Primiparous 253 (69.13) 85 (57.82) 1.63 1.10–2.43  
Place of delivery      
  Private clinic 118 (33.71) 25 (17.01) Reference   0.021
  Public hospital 224 (64.00) 113 (76.87) 0.42 0.26–0.68  
  Home 8 (2.29) 9 (6.12) 0.19 0.07–0.54  
Type of delivery      
  Vaginal 267 (76.95) 125 (85.03) Reference   0.042
  Caesarean section 80 (23.05) 22 (14.97) 1.70 1.01–2.86  
Antibiotherapy during delivery      
  No 201 (57.59) 100 (67.57) Reference   0.038
  Yes 148 (42.41) 48 (32.43) 1.53 1.02–2.30  
Epidural analgesia during delivery     
  No 73 (20.17) 48 (32.43) Reference   0.003
  Yes 289 (79.83) 100 (67.57) 1.90 1.24–2.92  
First contact with child      
  Immediately 243 (66.21) 114 (77.51) Reference   0.019
  10-60 min 78 (21.25) 25 (17.01) 1.46 0.89–2.42  
  > 60 min 46 (12.53) 8 (5.44) 2.70 1.23–5.90  
Separation child-mother longer than 24 h     
  No 330 (89.92) 144 (97.30) Reference   0.009
  Yes 37 (10.08) 4 (2.70) 4.04 1.41–11.53  
  1. OR, odds ratio; CI, confidence interval.
  2. *The number of cases varies because of missing data.