Risk Factors Associated with Dengue Transmission and Spatial Distribution of High Seroprevalence in Schoolchildren from the Urban Area of Medellin, Colombia

Table 1

General characteristics of the studied schoolchildren population through 2010–2012, Medellin, Colombia.

	2010	2011	2012	Overall
	Gender	% (n)	% (n)	% (n)	% (n)
Male	48.5 (867)	47.2 (891)	47.1 (334)	47.7 (2,092)
Female	51.5 (921)	52.8 (997)	52.9 (375)	52.3 (2,293)
Self-reported ethnic group
Mestizo	95.0 (1,698)	96.5 (1,800)	98.0 (695)	96.1 (4,193)
Afro-Colombian	5.0 (90)	3.5 (65)	2.0 (14)	3.9 (169)
Age group (years)
5 to 9	31.9 (571)	21.1 (399)	26.5 (188)	26.4 (1,158)
10 to 14	54 (965)	58.1 (1,097)	58.4 (414)	56.5 (2,476)
15 to 19	14.1 (252)	20.8 (392)	15.1 (107)	17.1 (751)
Age median (IQR)	11 (9–13)	12 (10–14)	11 (9–13)	12 (9–14)
Socioeconomic status
Low	56.9 (1,017)	60.3 (1,137)	48.6 (343)	57.0 (2,497)
Middle	36.2 (648)	34.5 (651)	51.4 (363)	38 (1,662)
High	6.9 (123)	5.1 (97)	0.0 (0)	5.0 (220)

IQR: interquartile range.