Table 1 The distribution of baseline characteristics among pregnant women with and without placenta sample for placental malaria diagnosis, 2010–2014 Dar-es-Salaam, Tanzania
Characteristics | Placenta sample | |
|---|---|---|
No (n = 1096)a | Yes (n = 1404) | |
Maternal age in years, median (IQR) | 22 (20–25) | 22 (20–25) |
Maternal age in years, n (%) | ||
 24 and below | 815 (74.7) | 993 (71.0) |
 25–34 | 268 (24.6) | 388 (27.7) |
 35 and above | 8 (0.7) | 18 (1.3) |
Gestational age in weeksb, median (IQR) | 10 (8–12) | 10 (8–12) |
Employment, n (%) | ||
 Employedc | 326 (29.9) | 415 (29.9) |
 Unemployed | 620 (56.9) | 764 (54.9) |
 Other | 144 (13.2) | 214 (15.4) |
Marital status, n (%) | ||
 Living singled | 100 (9.2) | 141 (10.1) |
 Married or cohabitating | 989 (90.8) | 1255 (89.9) |
Years of education, n (%) | ||
 0–7 | 774 (70.7) | 1013 (72.2) |
 8–11 | 270 (24.7) | 316 (22.5) |
 12 and above | 51 (4.7) | 75 (5.3) |
Wealth quartile, n (%) | ||
 1 (Lowest) | 243 (23.7) | 347 (26.4) |
 2 | 259 (25.3) | 306 (23.3) |
 3 | 317 (30.9) | 402 (30.6) |
 4 (Highest) | 206 (20.1) | 261 (19.8) |
Number of previous pregnancies, n (%) | ||
 First | 530 (48.4) | 668 (47.7) |
 Second | 565 (51.6) | 734 (52.4) |
Twin pregnancy, n (%) | ||
 Not twin | 1080 (98.5) | 1372 (97.7) |
 Twin | 16 (1.5) | 32 (2.3) |
Uses fumigation or mosquito coils or net at night, n (%) | ||
 No | 64 (5.9) | 87 (6.3) |
 Yes | 1021 (94.1) | 1304 (93.8) |
Mid-upper arm circumference in cm, median (IQR) | 26 (24–28) | 26 (24–28) |
Body mass index (kg/m2), median (IQR) | 22.2 (20.2–25.4) | 22.6 (20.1–25.7) |
Body mass index (kg/m2), n (%) | ||
 Underweight | 112 (10.3) | 151 (10.8) |
 Normal | 681 (62.7) | 843 (60.5) |
 Overweight or obese | 293 (27.0) | 400 (28.7) |
Hemoglobin in g/dL, median (IQR) | 11.6 (10.7–12.5) | 11.6 (10.7–12.4) |
Anemia status, n (%) | ||
 Not anemic (Hb ≥ 11.0 g/dL) | 738 (69.9) | 938 (69.6) |
 Anemic (Hb < 11.0 g/dL) | 318 (30.1) | 410 (30.4) |
Peripheral malaria, n (%) | ||
 Negative | 740 (98.0) | 1305 (98.1) |
 Positive | 15 (2.0) | 26 (2.0) |