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Table 1 Characteristics of the study population

From: Effects of the KEIGAAF intervention on the BMI z-score and energy balance-related behaviors of primary school-aged children

  Intervention group (N = 419) Control group (N = 104) Total (N = 523)
M (SD) N (%)b M (SD) N (%)b M (SD) N (%)b
Child characteristics at baseline
Age (years) 8.47 (1.05)   8.68 (1.07)   8.51 (1.06)  
Gender
 Boys   191 (45.6)   49 (47.1)   240 (45.9)
 Girls   228 (54.4)   55 (52.9)   283 (54.1)
Ethnicitya
 Western   223 (53.5)   74 (71.8)   297 (57.1)
 Non-Western   194 (46.5)   29 (28.2)   223 (42.9)
BMI z-score 0.23 (1.09)   0.22 (0.97)   0.23 (1.06)  
Weight status
 Underweight   13 (3.3)   3 (3.1)   16 (3.2)
 Normal weight   293 (73.3)   76 (77.6)   369 (74.1)
 Overweight   55 (13.8)   11 (11.2)   66 (13.3)
 Obese   39 (9.8)   8 (8.2)   47 (9.4)
Parent characteristics at baseline
Age (years)a 39.15 (5.58)   36.45 (5.91)   38.64 (5.74)  
Educational levela
 Low   80 (24.2)   34 (45.9)   114 (28.1)
 Middle   124 (37.5)   26 (35.1)   150 (37.0)
 High   127 (38.4)   14 (18.9)   141 (34.8)
Family situation
 Living together   272 (81.9)   55 (73.3)   327 (80.3)
 Single   60 (18.1)   20 (26.7)   80 (19.7)
BMI (kg/m2) 25.03 (4.19)   26.01 (4.95)   25.19 (4.33)  
Weight status
 Normal weight   145 (57.8)   28 (56.0)   173 (57.5)
 Overweight   106 (42.2)   22 (44.0)   128 (42.5)
  1. Note. M Mean, SD Standard deviation, N number of participants, BMI Body Mass Index
  2. aSignificantly different at baseline compared with the control group
  3. bTotal N of categorical variables can vary due to missing data