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Table 2 Characteristics of women with and without a BCG scar

From: Factors associated with birthweight and adverse pregnancy outcomes among children in rural Guinea-Bissau - a prospective observational study

  BCG scar for mothers of infants enrolled in the BCGR triala BCG scar for all women who gave consent to enter the BCGR trialb
N = 627 N = 1320
Background factors BCG scar No BCG scar P-valuec BCG scar No BCG scar P-valuec
Total n (%) = 398 (63) n (%) = 229 (37)   n (%) = 848 (64) n (%) = 472 (36)  
Region    0.85    0.71
 Oio 223 (56) 123 (54)   400 (47) 213 (45)  
 Biombo 83 (21) 49 (21)   259 (31) 144 (31)  
 Cacheu 92 (23) 57 (25)   189 (22) 115 (24)  
Socioeconomic factorsd       
Roof type    0.22    0.12
 Hard roof 319 (80) 172 (76)   660 (78) 346 (74)  
 Straw roof 79 (20) 55 (24)   188 (22) 122 (26)  
Radio    0.52    0.86
 Yes 348 (90) 200 (88)   728 (88) 412 (89)  
 No 37 (10) 26 (12)   95 (12) 52 (11)  
Solar panel/Generator    0.47    0.25
 Yes 174 (44) 105 (47)   348 (41) 178 (38)  
 No 219 (56) 119 (53)   494 (59) 286 (62)  
Mobile phone    0.82    0.35
 Yes 234 (61) 132 (60)   502 (62) 271 (59)  
 No 148 (39) 87 (40)   313 (38) 188 (41)  
Toilet    0.99    0.20
 Latrine/Toilet in the house 301 (76) 171 (76)   615 (73) 356 (76)  
 No toilet 97 (24) 55 (24)   233 (27) 112 (24)  
Maternal schoold    0.87    0.21
 0 years of school 176 (46) 112 (53)   329 (41) 205 (46)  
 1–4 years of school 121 (32) 50 (23)   265 (33) 121 (27)  
 More than 4 years of school 83 (22) 51 (24)   216 (27) 118 (27)  
Other background factors       
 Median maternal age at birth of child [IQR in years]e,f 26.1 [21.6, 30.2] 27.2 [21.5, 33] < 0.001 25.6 [21, 30.2] 26.2 [21.1, 33.1] < 0.001
 Median number of prenatal consultations [IQR]e,g 2 [1, 4] 2 [1, 4] 0.19 2 [1, 4] 2 [1, 4] 0.60
 Mean maternal MUAC (SD in mm)h 260 (26) 259 (27) 0.37 267 (31) 265 (30) 0.13
 Median number of pregnancies [IQR]e,i 3 [2, 4] 3 [2, 5] 0.001 3 [2, 4] 3 [2, 5] < 0.001
  1. a) One mother of enrolled children had missing BCG scar information
  2. b) Four consented women had missing BCG scar information
  3. c) Distribution of background factors compared by binomial regression to express the association between scar and the background factors; intra-cluster correlation taken into account by robust standard error. Continuous variables grouped in quartiles
  4. d) Numbers do not add up since some had missing information on background factors
  5. e) Non-normal distributed variables presented by median and inter-quartile range (IQR)
  6. f) Three mothers of enrolled infants and 52 women in consent cohort had missing information on maternal age
  7. g) 57 mothers of enrolled infants and 243 women in consent cohort had missing information on number of antenatal consultations
  8. h) MUAC: Mid upper-arm circumference; SD: Standard deviation (SD). 14 mothers of enrolled infants and 157 women in consent cohort had missing information on MUAC
  9. i) Five mothers of enrolled infants and 12 women in consent cohort had missing information on parity