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Table 4 Characteristics and reliability of the BPS-J total score

From: Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J)

 

Full items

Item 2 eliminated

Item2 & 3 eliminated

Average score

 Mean

2.71

2.72

2.74

 SD

0.81

0.87

0.91

 Median

2.78

2.75

2.79

 IQR

2.11 – 3.22

2.0 – 3.25

2.0 – 3.29

 ICC

0.78

0.78

0.78

 Pearson's r

0.78

0.78

0.78

 SEM

0.38

0.41

0.42

 MDC

1.06

1.13

1.18

Sum score

 Mean

24.32

21.69

19.07

 SD

 ± 7.36

 ± 7.05

 ± 6.36

 Median

25

22

19

 IQR

19 – 29

16 – 26

14 – 23

 ICC

0.77

0.78

0.78

 Pearson's r

0.78

0.78

0.78

 SEM

3.51

3.28

2.98

 SDC

9.74

9.08

8.28

Cronbach's α

0.86

0.87

0.88

McDonald's ω

0.86

0.87

0.88

  1. SD standard deviation, IQR interquartile range, ICC interclass correlation coefficient, SEM standard error of measurement, SDC smallest detectable change, Full items the full-item model, Item 2 eliminated the Item 2 eliminated model, Items 2 and 3 eliminated the Items 2 and 3 eliminated model
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BMC Psychology

ISSN: 2050-7283

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