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Table 1 Descriptive Statistics of the Sample According to Intervention Conditions

From: Examining the impact of a social skills training program on preschoolers’ social behaviors: a cluster-randomized controlled trial in child care centers

  Control Intervention p-value
(n = 176) (n = 185)
Sex (boy) a 86 (49.1%) 98 (52.7%) 0.57
Age (months)b 52.8 (5.0) 54.5 (4.5) p <  0.01
164 165  
Children with a developmental diagnosis a 7 (4.3%) 10 (6.1%) 0.47
162 164  
Siblings a 128 (78.5%) 143 (86.7%) 0.12
163 165  
Language spoken at home a    0.56
 French 123 (76.4%) 117 (71.3%)  
 English 4 (2.5%) 4 (2.4%)  
 Other 34 (21.1%) 43 (26.2%)  
161 164  
Number of months the child attended childcare b 39.4 (9.3) 40.2 (9.9) 0.46
151 159  
Child care hours/week a    0.26
 Less than 30 h 24 (14.6%) 35 (21.2%)  
 Between 30 and 40 h 104 (63.4%) 95 (57.6%)  
 More than 40 h 36 (22.0%) 35 (21.2%)  
164 165  
Family socio-economic status a    0.04
 Low socio-economic status 28 (18.7%) 15 (10.1%)  
 Middle-high socio-economic status 122 (81.3%) 133 (89.9%)  
150 148  
  1. a Frequency (%)
  2. b Mean (SD)
  3. Note1. SD = Standard deviation
  4. Note 2. We used bivariate analyses (t-test for continuous variables and chi-square for categorical variables) to verify whether socio-demographic characteristics of the child’s family were balanced between the intervention and control groups