Table 1.
General and clinical characteristics of the studied sample.
| Variables | n = 550 (%) | |
|---|---|---|
| Age (years) | Mean ± SD | 6.64 ± 2.61 |
| Min—Max | 2–12 | |
| Preschool (2 – <6) | 316 (57.5) | |
| School (6–12) | 234 (42.5) | |
| Gender | Male | 322 (58.5) |
| Female | 228 (41.5) | |
| BMI (kg/m2) | Mean ± SD | 20.5 ± 4.23 |
| Min—max | 11.5–35 | |
| Nutritional status | Underweight | 49 (8.9) |
| Normal | 410 (74.5) | |
| Overweight/obese | 91 (16.6) | |
| Respiratory condition | RRTIs | 150 (27.3) |
| RTI | 300 (54.5) | |
| Normal | 100 (18.2) | |
| Respiratory illness (n = 450) | Cold | 156 (34.7) |
| Pharyngitis | 141 (31.3) | |
| Otitis media | 97 (21.6) | |
| Sinusitis | 48 (10.6) | |
| Pneumonia | 8 (1.8) | |
| Vitamin A (mg/L) | Mean ± SD | 0.33 ± 0.17 |
| Min—max | 0.14–0.84 | |
| Normal | 526 (95.6) | |
| Subclinical deficiency | 17 (3.1) | |
| Deficiency | 7 (1.3) | |
RRTIs: recurrent respiratory tract infections; RTI: respiratory tract infection.