Table 5

Subjective sleep measures; Interactions

Pre to Post

Pre to Fu3

BTS v/s WL

BTS v/s BT

BT v/s WL

BTS v/s WL

BTS v/s BT

BT v/s WL

p

Effect size (ηp2)a

p

Effect size (ηp2)

p

Effect size (ηp2)

p

Effect size (ηp2)

p

Effect size (ηp2)

p

Effect size (ηp2)


ISI

< .001

0.52

< .001

0.20

< .001

0.21

< .001

0.36

.006

0.08

< .001

0.18

SRBQ

< .001

0.42

< .001

0.23

.007

0.08

< .001

0.33

.008

0.08

< .002

0.10

DBAS

< .001

0.53

< .001

0.21

.003

0.10

-*

-

-

-

-

-

Bed Time Stress

< .001

0.20

< .001

0.20

.71

0.00

< .001

0.18

.001

0.12

.23

0.02

Sleep Quality

< .001

0.27

.008

0.08

< .001

0.13

< .001

0.21

.02

0.06

.02

0.06


Abbreviations: Abbreviations: Pre, Pre-treatment assessment; Post, Post-treatment assessment; Fu3, 3-month follow-up assessment; BTS, Bibliotherapy with support; WL, Waiting list control group; BT, Bibliotherapy; ISI, Insomnia Severity Index; SRBQ, Sleep Related Behaviours Questionnaire; DBAS, Dysfunctional Beliefs and Attitudes about Sleep

a ηp2 (Eta-2) is interpreted as explained variance in the sample

* DBAS-data missing from 3-month follow-up

Jernelöv et al. BMC Psychiatry 2012 12:5   doi:10.1186/1471-244X-12-5

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