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Table 6 Subscale test-retest and internal reliabilities

From: Psychometrics of the preschooler physical activity parenting practices instrument among a Latino sample

  Test-retest reliability (n = 48) Internal reliability (n = 240)
Subscales ICC (95% CI) Mean (SD) Average inter-item correlation Cronbach’s alpha
   Assessment 1 Assessment 2   Total English Spanish
Practices that encourage child PA        
 Engagement (15 items) 0.85 (0.75, 0.91) 3.51 (0.62) 3.47 (0.58) 0.38 0.90 0.87 0.92
 How often do you not register your child for sports or dance due to lack of money? (single item) 0.62 (0.41, 0.76) 2.81 (1.42) 2.52 (1.22)     
 How often do you have outdoor toys available for your child? (single item) 0.57 (0.34, 0.74) 3.69 (1.37) 3.77 (1.24)     
Practices that discourage child PA        
 Promote inactivity (3 items) 0.59 (0.38, 0.85) 2.09 (0.80) 1.92 (0.70) 0.26 0.50 0.53 0.43
 Promote screen time (3 items) 0.62 (0.41, 0.77) 2.30 (0.65) 2.23 (0.56) 0.34 0.61 0.65 0.57
 Psychological control (5 items) 0.85 (0.75, 0.91) 2.11 (0.70) 2.03 (0.69) 0.26 0.59 0.67 0.49
 Restriction for safety concerns (4 items) 0.56 (0.33, 0.73) 2.62 (0.88) 2.55 (0.95) 0.53 0.82 0.81 0.80
  1. Legend: ICC = Intra-class correlation.
  2. Assessment 1 and 2 were about 2 weeks apart.