Mean ± SD

Range

Total PSI-SF-15

36.35 ± 9.04

15 - 61

Parental distress

13.83 ± 3.63

5 - 20

Parent-child dysfunctional interaction

9.56 ± 3.41

5 - 21

Difficult child

12.97 ± 4.16

5 - 25