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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Early Child Res Q. 2011 Sep;26(7):442–452. doi: 10.1016/j.ecresq.2011.03.003

Table 1.

Descriptive statistics of teacher and classroom characteristics at baseline

Full sample Treatment group Control group

n = 90 n = 48 n = 42
Teacher characteristics
Age 39.77 (12.03) 39.00 (12.23) 40.59 (11.91)
African American 0.71 (0.46) 0.67 (0.48) 0.76 (0.43)
Immigrant 0.16 (0.37) 0.23 (0.42) 0.08 (0.27)+
Head teacher 0.34 (0.48) 0.33 (0.48) 0.36 (0.48)
Bachelor or higher degree 0.27 (0.45) 0.30 (0.46) 0.25 (0.44)
≤ 3 years of preschool teaching 0.30 (0.46) 0.36 (0.49) 0.23 (0.42)
Married 0.37 (0.49) 0.36 (0.49) 0.38 (0.49)
Living with ≥ 4 people 0.45 (0.50) 0.42 (0.50) 0.49 (0.51)
Household primary income earner 0.64 (0.48) 0.63 (0.49) 0.65 (0.48)
Pretreatment scores
 Job control 3.32 (0.71) 3.42 (0.73) 3.21 (0.69)
 Job resources 3.91 (0.70) 4.05 (0.69) 3.78 (0.70)+
 Job demands 2.73 (0.69) 2.89 (0.71) 2.58 (0.63)*
 Confidence -1.82 (0.80) -1.99 (0.83) -1.65 (0.75)+
Classroom characteristics n = 35 n = 18 n = 17
Positive climate 5.25 (1.00) 4.96 (1.02) 5.56 (0.90)+
Teacher behavior management 4.86 (1.07) 4.56 (1.11) 5.18 (0.96)+
Class size 16.03 (2.92) 16.06 (3.08) 16.00 (2.83)
Number of adults in class 2.36 (0.69) 2.41 (0.78) 2.31 (0.59)
Percentage of boys 46.35 (10.58) 50.32 (10.46) 42.15 (9.24)*
Percentage of African American 67.14 (39.04) 67.23 (37.58) 67.05 (41.69)
Children’s average poverty risks 1.08 (0.38) 1.13 (0.42) 1.03 (0.33)
Children’s average BPI 6.58 (3.22) 6.93 (2.93) 6.21 (3.56)

Notes: means with standard deviations in parentheses;

*

p < 0.05,

+

p < 0.10 for two-tailed t-statistics testing mean differences between control and treatment groups.