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Table 2 Descriptive characteristics of the children who participated in the study

From: Compliance with nutrition standards in Mexican schools and their effectiveness: a repeated cross-sectional study

  Stage 2 Stage 3 Stage 4 Total
N 123 357 165 645
Age (mean, sd) 11.0 (1.0) 9.9 (1.3) 9.7 (1.2) 10.1 (1.3)
Girls, N(%) 69 (56.1) 188 (52.7) 88 (53.3) 345 (53.5)
Grade, N (%)
 3rd 1 (0.8) 86 (24.1) 52 (31.5) 138 (21.4)
 4th 44 (35.8) 112 (31.4) 46 (27.9) 202 (31.3)
 5th 45 (36.6) 85 (23.8) 35 (21.2) 165 (25.6)
 6th 33 (26.8) 74 (20.7) 32 (19.4) 139 (21.6)
Shift, N(%)
 Morning 95 (77.2) 245 (68.6) 128 (77.6) 468 (72.6)
 Afternoon 28 (22.8) 112 (31.4) 37 (22.4) 177 (27.4)
Healthy snack 19 (15.5) 62 (17.4) 36 (21.8) 117 (18.1)
Snack origin N(%)
 Home 56 (45.5) 135 (37.8) 69 (41.8) 260 (40.3)
 School 51 (41.5) 109 (30.5) 57 (34.6) 217 (33.6)
 Home and school 16 (13.0) 113 (31.7) 39 (23.6) 168 (26.1)