Skip to main content
. 2013 Jan 8;8(1):e54026. doi: 10.1371/journal.pone.0054026

Table 1. Summary of the cohort characteristics.

Characteristic Number
Sex
Male (%) 484 (51)
Female (%) 471 (49)
Birth weight (kg)
Mean (SD) 2.92 (0.47)
<2.50 kg (%) 139 (14.7)
Gestation (weeks)
Mean (SD) 39 (2)
Premature (<37 completed weeks) (%) 79 (8.3)
Delivery
Home (%) 180 (18.9)
Duration of pre-partum rupture of membranes (hours), median (range) 1 (0–240)
Prolonged rupture of membranes (> 18hours) (%) 30 (4.3%)
Season of birth
Wet (%) 391 (40.9)
Hot (%) 205 (21.5)
Cool (%) 359 (37.6)
Ethnic group
Sgaw Karen (%) 653 (69.2)
Paw Karen (%) 125 (13.2)
Muslim (%) 121 (12.8)
Other (%) 45 (4.8)
Mothers age
Age in years, mean (SD) 26 (6.7)
<20 years (%) 162 (17.1)
<18 years (%) 63 (6.7)
Gravidity and parity
Median gravida (range) 3 (1–17)
Median parity (range) 2 (1–11)
Household
Number of people living in house (including study infant), median (range) 5 (2–15)
<5 years (not including study infant) (range) 1 (0–4)
5–15 years (range) 1 (0–9)
15–60 years (range) 3 (1–12)
>60 years (range) 0 (0–2)
Households with members >60 years (%) 101 (13.4)
Number of rooms in the house, median (range) 2 (1–7)
Number of people sleeping in the same bed as the study infant (excluding the study infant), median (range) 3 (1–8)
Number of mothers who smoked (%) 256 (27.1)
Number of smokers in the household, median (range) 1 (0–6)
Animals kept by family (%) 340 (45)
Distance to next house in m, median (range) 1.97 (0–270)
Cooking stove
Poor ventilation reported in the house (%) 241 (32)
Distance from stove to infants bed in m, median (range) 4.4 (0.6–11.6
House size
Floor area in m2, median (range) 34.8(2.2–136.2)
House volume in m3, median (range) 101.0 (6.0–626.5)
House volume per person in m3, median (range) 19.1 (0.9–313.3)