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Table 1 Characteristics of participants of vaccination study cohort stratified by urban Dar es Salaam (n = 11,189) and rural Morogoro (n = 19,767) site

From: Determinants of delayed or incomplete diphtheria-tetanus-pertussis vaccination in parallel urban and rural birth cohorts of 30,956 infants in Tanzania

Characteristic Urban Dar es Salaam
N = 11,189
n (%)
Rural Morogoro Region
N = 19,767
n (%)
Infant sex
 Male 5712 (51.1%) 10,517 (53.2%)
 Female 5473 (48.9%) 9250 (46.8%)
Parity
 Firstborn 2577 (30.3%) 4865 (28.7%)
 2nd-4th child 5239 (61.6%) 9083 (53.6%)
 5th or greater child 686 (8.1%) 3006 (17.7%)
Birthweight
  Low birthweight (< 2500 g) 967 (8.7%) 2741 (13.9%)
  Normal birthweight (≥2500 g) 10,208 (91.3%) 17,026 (86.1%)
Gestational Age
  Preterm (< 37 weeks) 1511 (19.0%) 1887 (15.9%)
  Term (≥37 weeks) 6430 (81.0%) 9978 (84.1%)
Size for gestational Age
  SGA (<10th percentile) 729 (9.3%) 1572 (13.6%)
  No SGA (≥10th percentile) 7084 (90.7%) 9987 (86.4%)
Maternal age
 < 20 years 1835 (18.5%) 4517 (23.6%)
 20–25 years 3269 (33.0%) 5266 (27.5%)
 25–30 years 2825 (28.5%) 5256 (27.4%)
 30–35 years 1396 (14.1%) 2744 (14.3%)
  ≥ 35 years 589 (5.9%) 1397 (7.3%)
Maternal education
 No formal schooling 466 (4.8%) 2098 (10.9%)
 Some primary 347 (3.6%) 1872 (9.8%)
 Completed primary 7291 (74.7%) 13,974 (72.9%)
 Secondary plus 1656 (17.0%) 1225 (6.4%)
Paternal education
 No formal schooling 189 (1.9%) 1218 (6.4%)
 Some primary 221 (2.2%) 1481 (7.7%)
 Completed primary 6631 (67.8%) 14,588 (76.1%)
 Secondary plus 2742 (28.0%) 1889 (9.9%)
Place of birth
 Home 60 (0.6%) 2646 (13.4%)
 Facility 10,819 (99.4%) 17,100 (86.6%)
Trimester of first ANC visit
 1st Trimester 1133 (13.3%) 1536 (9.6%)
 2nd Trimester 6604 (77.3%) 12,486 (77.8%)
 3rd Trimester 802 (9.4%) 2031 (12.7%)