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
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%) |