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Table 1 Sample characteristics and attrition analysis

From: A single-arm pilot study: can a parental sleep intervention for sleep-disturbed young children in individual settings improve children’s sleep, crying, eating, and parental distress in mothers and fathers?

Sample characteristics

Total

Drop-out

Non-dropout

Drop-out vs. Non-dropout

Children

N = 60

n = 21

n = 39

 

female child, n (%)

30 (50)

12 (57.14)

18 (46.15)

χ2 (1) = 0.66, p = 0.417

age, months, Mdn (Q1-Q3)

17 (12.00–26.75)

15 (12.00–26.50)

18 (13.00–34.00)

z = 0.67, p = 0.505

Mothers

N = 57

n = 20

n = 37

 

age, years Mdn (Q1-Q3)

34.00 (31.25–36.00)

33.00 (30.25–35.00)

35.00 (32.00–36.00)

z = 1.13, p = 0.260

high-school or higher education, n (%)

24 (42.85)

9 (45.00)

15 (41.66)

χ2 (1) = 0.058, p = 0.809

employed (full- or part-time), n (%)

31 (58.49)

9 (45.00)

22 (61.11)

χ2 (1) = 0.317, p = 0.573

Fathers

N = 51

n = 18

n = 33

 

age, years, Mdn (Q1-Q3)

36.00 (32.00–39.00)

34.00 (30.75–39.00)

36.50 (34.00–39.00)

z = 1.58, p = 0.114

high-school or higher education, n (%)

25 (50.00)

10 (55.55)

15 (46.87)

χ2 (1) = 0.347, p = 0.556

employed (full- or part-time), n (%)

46 (97.87)

15 (93.75)

31 (100.00)

χ2 (1) = 1.980, p = 0.159

  1. ‘Drop-out’ refers to participants who dropped out after T1. ‘Non-dropout’ refers to participants who completed at least T1 and one additional measurement point. Chi-square and Mann-Whiney U tests were used to test differences between drop-outs and non-dropouts. Z stands for the z-scores of the Mann-Whiney U tests. The percentage value refers to the proportion of available data
  2. Abbreviations: Mnd Median, Q1 25th percentile, Q3 75th percentile