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. 2010 Apr 23;10:25. doi: 10.1186/1471-2431-10-25

Table 1.

Gender, weight and length at birth, duration of symptoms, and clinical presentation according to age group

Age group (months) p

≤ 6.0
(n = 79)
6.1 - 12.0
(n = 51)
12.1 - 24.0
(n = 29)
Gender (male/female)1 39/40 30/21 16/13 0.561
Birth weight (grams)2 3015
(2821; 3348)
3020
(2793; 3364)
3122
(2955; 3370)
0.663
Birth length (cm)2 48.5
(47.3; 50.0)
49.0
(48.0; 50.0)
49.0
(47.1; 50.0)
0.901
Duration of symptoms (months)2,3 1.0
(1.0; 2.0)
5.0
(4.0; 7.0)
12.0
(10.0; 18.0)
<0.001
Systemic symptoms1 14
(17.7%)
18
(35.3%)
7
(24.1%)
0.075
Digestive symptoms1,4 76
(96.2%)
42
(82.4%)
23
(79.3%)
0.011
Cutaneous symptoms1 13
(16.5%)
10
(19.6%)
4
(13.8%)
0.789
Respiratory symptoms1,4 9
(11.4%)
16
(31.4%)
6
(20.7%)
0.019

1. Chi-square test

2. Median and 25th and 75th percentiles; Kruskal-Wallis test for multiple groups.

3. Dunn test for multiple comparisons for the variable "duration of symptoms"

- p < 0.05: (≤ 6.0 months) × (6.1 - 12.0 months);

- p < 0.05: (≤ 6.0 months) × (12.1 - 24.0 months);

- p < 0.05: 6.1 - 12.0 months) × (12.1 - 24.0 months);

4. Chi-square results:

Digestive symptoms: ≤ 6 months versus 6-12 months, p = 0.008; ≤ 6 months versus 12-24 months, p = 0.005; 6-12 months versus 12-24 months, p = 0.737.

Respiratory symptoms: ≤ 6 months versus 6-12 months, p = 0.005; ≤ 6 months versus 12-24 months, p = 0.304; 6-12 months versus 12-24 months, p = 0.216.