Frequency and Clinical Features of Dengue Infection in a Schoolchildren Cohort from Medellin, Colombia

Table 1

Sociodemographics characteristics of the cohort of schoolchildren. Medellin, Colombia.

Characteristics	2010		2011
	No.	%	No.	%
Number of schoolchildren enrolled	2379		1840
Sex
Male	1123	47.2	948	51.5
Female	1256	52.8	892	48.5
Age (years)
5	67	2.8	0	0
6	141	5.9	56	3.0
7	135	5.7	116	6.3
8	137	5.8	92	5.0
9	215	9.0	110	6.0
10	197	8.3	184	10.0
11	312	13.1	150	8.2
12	333	14.0	257	14.0
13	221	9.3	257	14.0
14	209	8.8	186	10.1
15	182	7.7	170	9.2
16	147	6.2	162	8.8
17	67	2.8	77	4.2
18	13	0.5	19	1.0
19	3	0.1	4	0.2
Mean ± SD (range)	11.3±3.1 (5–19)		12.1±3.0 (6–19)
Socioeconomic status
Low	1337	56.2	934	50.8
Median	873	36.7	759	41.3
High	163	6.9	145	7.9
No data	6	0.3	2	0.1