Table 1. Nutritional status (BMI, Kg/m2) and sleep duration (hours) by country.

Variable	Peru (n = 1,929) % (95% CI)	India (n = 1,929) % (95% CI)	Vietnam (n = 1,910) % (95% CI)	Ethiopia (n = 1,882) % (95% CI)
Nutritional Status
BMI Mean (±SD)	16.9 (2.3)	13.9 (1.6)	15.1 (2.9)	14.1 (1.4)
Underweight	3.7 (2.9–4.6)	58.1 (55.9–60.3)	35.2 (33.1–37.4)	52.2 (50.0–54.5)
Normal weight	75.1 (73.2–77.1)	40.2 (38.0–42.4)	55.8 (53.4–58.0)	47.1 (44.8–49.3)
Overweight	15.8 (14.2–17.4)	1.3 (0.8–1.9)	6.1 (5.0–7.2)	0.5 (0.2–0.8)
Obesity	5.4 (4.4–6.4)	0.3 (0.0–0.6)	2.8 (2.1–3.6)	0.2 (0.0–0.4)
Sleep Duration
Mean (±SD)	9.6 (0.9)	9.1 (0.9)	9.7 (1.0)	9.7 (1.0)
Short	41.6 (39.4–43.8)	63.5 (61.4–65.7)	43.0 (40.8–45.2)	42.1 (39.9–44.4)
Regular	55.6 (53.4–57.8)	36.0 (33.8–38.1)	53.1 (50.8–55.3)	53.6 (51.3–55.8)
Long	2.8 (2.1–3.5)	0.5 (0.2–0.8)	3.9 (3.1–4.8)	4.3 (3.4–5.2)

Young Lives Study, 3° round younger cohort.

SD, standard deviation.