Table 1 Characteristics of the study sample for selected variables, Mexico 2023.
From: Metal concentrations and KIM-1 levels in school-aged children: a cross-sectional study
Characteristic | Girls | Boys | p | |
|---|---|---|---|---|
Overall n= 99 | n= 52 | n= 47 | ||
Age (mean ± S.D.), years | 8.1 ± 1.5 | 8.0 ± 1.5 | 8.2 ± 1.5 | 0.456 |
Age group (tertiles), years | ||||
5–7 | 39 (39.3) | 23 (44.2) | 16 (34.0) | 0.553 |
8–9 | 42 (42.5) | 20 (38.5) | 22 (46.8) | |
10–12 | 18 (18.2) | 9 (17.3) | 9 (19.2) | |
Height (mean ± S.D.), cm | 130.6 ± 11.0 | 129.9 ± 11.4 | 131.2 ± 10.6 | 0.576 |
Weight (mean ± S.D.), kg | 31.8 ± 11.5 | 31.3 ± 12.5 | 32.4 ± 10.4 | 0.642 |
Children per locality of residence | ||||
COL | 15 (15.2) | 10 (19.2) | 5 (10.6) | 0.686 |
TEC | 9 (9.1) | 4 (7.7) | 5 (10.6) | |
ARM | 9 (9.1) | 5 (9.6) | 4 (8.5) | |
CAL | 9 (9.1) | 4 (7.7) | 5 (10.6) | |
MAN | 11 (11.1) | 5 (9.6) | 6 (12.8) | |
CAM | 10 (10.1) | 5 (9.6) | 5 (10.6) | |
QUE | 20 (20.2) | 8 (15.4) | 12 (25.6) | |
MIN | 4 (4.0) | 2 (3.9) | 2 (4.3) | |
PAT | 12 (12.1) | 9 (17.3) | 3 (6.4) | |
Nutritional status: | ||||
Weight-for-age | ||||
Malnutrition (mild—moderate) | 12 (12.1) | 8 (15.4) | 4 (8.5) | 0.503 |
Normal | 55 (55.6) | 29 (55.8) | 26 (55.3) | |
Overweight—Obesity | 32 (32.3) | 15 (28.8) | 17 (36.2) | |
Height-for-age | ||||
Low | 11 (11.1) | 3 (5.8) | 7 (14.9) | 0.319 |
Normal | 73 (73.7) | 41 (78.8) | 33 (70.2) | |
High | 15 (15.2) | 8 (15.4) | 7 (14.9) | |
BMI-for-age | ||||
Low | 2 (2.2) | 2 (4.4) | 0 (0) | 0.601 |
Normal | 60 (60.4) | 33 (63.0) | 27 (57.8) | |
Overweight—Obesity | 37 (37.4) | 17 (32.6) | 20 (42.2) | |
Ever medical diagnosis of (any, yes) | ||||
Chronic respiratory disease | 5 (5.1) | 1 (1.9) | 4 (8.5) | 0.135 |
Neurological disease | 6 (6.1) | 3 (5.8) | 3 (6.4) | 0.898 |
Immunological or allergic disease | 10 (10.1) | 8 (15.4) | 2 (4.3) | 0.067 |
Psychiatric disease | 7 (7.1) | 3 (5.8) | 4 (8.5) | 0.595 |
