Variable |
Number (%) or mean [SD] | Range | n= |
Maternal | |||
Age (years) | 22.1 [3.9] | 15–40 | 577 |
Height (cm) | 152.6 [6.1] | 136–172 | 563 |
Weight (kg) | 49.4 [6.0] | 36–81 | 564 |
Body mass index | 21.2 [2.2] | 15–31 | 563 |
Haemoglobin (g/dl) | 11.0 [2.1] | 4–18.6 | 574 |
Free T4 | 14.1 [3.6] | 5.5–34.3 | 559 |
TSH | 3.05 [2.43] | 0.2–26.2 | 559 |
<5 IU/l | 477 (85%) | ||
>5 IU/l | 82 (15) | ||
Pregnancy | |||
Parity | 576 | ||
Primiparate | 369 (64) | ||
Multiparate | 207 (36) | ||
Antenatal visits | 572 | ||
None | 303 (53) | ||
One/two | 78 (14) | ||
More than two | 191 (33) | ||
Gestational age | 576 | ||
Term | 530 (92) | ||
Post term | 46 (8) | ||
Infant mean (SD) | |||
Age at sampling (hrs) | 21.3 (12.7) | 0–55 | 578 |
Sex | 577 | ||
Male | 280 (49) | ||
Female | 297 (51) | ||
Birthweight | 577 | ||
<2.5 kg | 183 (32) | ||
>2.5 kg | 394 (68) | ||
Birthweight (kg) | 2.69 [0.4] | 1.7–3.9 | 577 |
Birth length (cm) | 47.2 [2.1] | 41–54 | 576 |
Ponderal index | 2.5 [0.29] | 1.6–4.0 | |
Head size (cm) | 32.6 [1.3] | 29–42 | 575 |
Rectal temperature | 36.5 [0.76] | 33.9–39.2 | 574 |
<36 | 114 (20) | ||
>36 | 460 (80) | ||
Infant haemoglobin (g/dl) | 17.5 (2.5) | 9–25 | 572 |
<21 g/dl | 533 (93) | 572 | |
>21 g/dl | 39 (7) | ||
Free T4 | 29.4 [9.7] | 11–70 | 558 |
Infant TSH | 23.9 [16.6] | 1.4–170 | 556 |
Last feed | 577 | ||
<3 hrs | 436 (76) | ||
>3 hrs | 141 (24) | ||
Apgar score | 576 | ||
<7 at 5 min | 133 (23) | ||
>7 at 5 min | 443 (73) | ||
Environment | |||
Ambient temperature | 578 | ||
<25°C | 300 (52) | ||
>25°C | 278 (48) |