Table 1. Characteristics per geographic area where under-fives live. Colombia, ENSIN-2015.

Variable		Urban area		Rural area		PR (95%CI)a	p
		n	Prevalence (95%CI)	n	Prevalence (95%CI)
Gender
	Male	4,473	51.5 (49.7–53.3)	1,808	51.4 (49.1–53.6)	1.0 (0.97–1.03)	0.928
	Female	4,378	48.5 (46.7–50.3)	1,752	48.6 (46.4–50.9)	1.0 (0.97–1.03)	0.955
Age group (months)
	0–11	1,740	20.1 (18.8–21.4)	657	19.3 (17.7–21.1)	1.0 (0.95–1.08)	0.668
	12–23	1,753	19.9 (18.8–21.2)	675	19.8 (18.2–21.5)	1.0 (0.94–1.06)	0.975
	24–35	1,815	19.8 (18.4–21.2)	733	20.9 (18.7–23.3)	1.0 (0.92–1.04)	0.533
	36–48	1,698	19.5 (18.3–20.8)	754	20.7 (18.9–22.6)	1.0 (0.91–1.05)	0.493
	48–59	1,845	20.7 (19.4–22.1)	741	19.3 (17.8–21.0)	1.0 (0.97–1.09)	0.422
Wealth index
	T1- Poorest	1,953	9.6 (8.2–11.3)	2,995	76.9 (72.5–80.8)	0.1 (0.09–0.12)	< 0.001
	T2	3,679	37.9 (35.6–40.3)	542	21.7 (18.0–26.0)	1.1 (1.07–1.12)	< 0.001
	T5- Wealthiest	3,219	52.5 (50.0–54.9)	23	1.4 (0.9–2.3)	1.0 (1.01–1.02)	< 0.001
Household chief educational level
	Lower than primary school	1,589	15.4 (14.1–16.8)	1,697	46.6 (42.7–50.6)	0.9 (0.82–0.94)	< 0.001
	Lower than secondary school	2,798	33.0 (31.0–35.1)	1,218	33.7 (31.1–36.4)	1.0 (0.95–1.03)	0.673
	Lower than higher education	3,787	43.8 (41.7–45.9)	583	19.2 (16.4–22.3)	1.1 (1.12–1.17)	< 0.001
	Higher education and further	607	7.8 (6.2–9.8)	27	0.5 (0.3–0.8)	1.0 (0.98–1.07)	0.478
Food insecurityb
	No	3,194	40.4 (38.3–42.6)	969	31.7 (28.6–34.9)	1.1 (1.05–1.13)	< 0.001
	Mild	3,282	37.6 (35.5–39.6)	1,236	35.7 (32.9–38.7)	1.0 (0.99–1.07)	0.234
	Moderate	1,437	13.4 (12.3–14.6)	690	18.3 (16.1–20.7)	0.9 (0.80–0.97)	0.004
	Severe	936	8.6 (7.5–9.9)	660	14.3 (11.9–17.0)	0.8 (0.65–0.90)	< 0.001
Water availability
	Water supply network	6,171	84.6 (82.3–86.4)	634	22.6 (19.3–26.2)	1.5 (1.42–1.53)	< 0.001
	Well or community supply	353	1.5 (1.04–2.03)	1166	34.0 (29.7–38.7)	0.0 (0.02–0.10)	< 0.001
	Bottled water	1,311	10.0 (8.67–11.6)	161	4.1 (3.05–5.60)	1.1 (1.03–1.12)	0.020
	Others	1,016	3.9 (2.98–5.15)	1,599	39.3 (34.4–44.3)	0.9 (0.84–0.91)	< 0.001
Sewage system
	Yes	6,924	89.9 (88.0–91.5)	378	16.2 (12.5–20.6)	3.1 (2.96–3.35)	< 0.001
	No	1,927	10.1 (8.5–12.0)	3,182	83.8 (79.4–87.5)	0.0 (0.03–0.05)	< 0.001
Diarrheac
	Yes	1,057	29.0 (26.6–31.6)	428	38.0 (32.6–43.6)	1.2 (1.08–1.27)	< 0.001
	No	2,314	71.0 (68.4–73.4)	703	62.0 (56.4–67.4)	1.1 (1.06–1.16)	< 0.001
Acute respiratory infectionc
	Yes	2,634	79.8 (77.6–81.8)	873	77.6 (72.9–81.6)	1.0 (0.99–1.09)	0.155
	No	737	20.2 (18.2–22.4)	258	22.4 (18.4–27.1)	1.0 (0.88–1.06)	0.441

^aPR: prevalente ratio [urban/rural].

^bBased on ELCSA.

^cWithin the previous fifteen days, self-reported.