Work-focused cognitive behavioral intervention for psychological complaints in patients on sick leave due to work-related stress: Results from a randomized controlled trial

Dalgaard, Vita Ligaya; Andersen, Lars Peter Sønderbo; Andersen, Johan Hviid; Willert, Morten Vejs; Carstensen, Ole; Glasscock, David John

doi:10.1186/s12952-017-0078-z

Journal of Negative Results in BioMedicine

Table 3 Changes over time from 4- to 10-month follow-up

From: Work-focused cognitive behavioral intervention for psychological complaints in patients on sick leave due to work-related stress: Results from a randomized controlled trial

	4 months		4–10 months changes
Variable	M	95%CI	M-change	95%CI	p-value	d	d 95%CI
PSS10 (range 0–40)
Intervention group	15.77	14.1 to 17.45	−1.54	−3.24 to 0.16	0.075	−0.24	−0.51 to 0.02
Control group A	15.81	14.05 to 17.58	−1.43	−3.23 to 0.37	0.120	−0.23	−0.51 to 0.06
Control group B	17.89	15.98 to 19.80	−1.29	−3.25 to 0.67	0.198	−0.21	−0.52 to 0.11
Effect I vs A			−0.11	−2.59 to 2.36	0.928	−0.02	−0.41 to 0.37
Effect I vs B			−0.25	−2.85 to 2.34	0.849	−0.04	−0.45 to 0.37
Effect A vs B			−0.14	−2.8 to 2.52	0.919	−0.02	−0.44 to 0.40
GHQ30 (0–30)
Intervention group	6.89	4.91 to 8.88	−1.43	−3.79 to 0.93	0.234	- 0.19	−0.51 to 0.12
Control group A	6.59	4.48 to 8.71	−1.10	−3.61 to 1.40	0.389	−0.15	−0.48 to 0.19
Control group B	8.21	5.94 to 10.49	−1.23	−3.94 to 1.48	0.374	−0.17	−0.53 to 0.20
Effect I vs A			−0.33	−3.77 to 3.11	0.850	−0.04	−0.51 to 0.42
Effect I vs B			−0.20	−3.8 to 3.39	0.912	−0.03	−0.51 to 0.45
Effect A vs B			0.13	−3.56 to 3.82	0.945	0 .02	−0.48 to 0.51
BNSQ (range 5–25)
Intervention group	13.40	12.30 to 14.50	−1.10	−2.28 to 0.08	0.068	−0.27	−0.55 to 0.02
Control group A	14.01	12.85 to 15.17	−1.37	−2.62 to −0.13	0.031	−0.33	−0.63 to −0.03
Control group B	14.18	12.91 to 15.45	−0.92	−2.29 to 0.45	0.190	−0.22	−0.56 to 0.11
Effect I vs A			0.27	−1.44 to 1.99	0.754	0.07	−0.35 to 0 .48
Effect I vs B			−0.18	−1.99 to 1.62	0.843	−0.04	−0.48 to 0.39
Effect A vs B			−0.46	−2.31 to 1.4	0.629	0.11	−0.56 to 0.34
CFQ- Memory (0–28)
Intervention group	7.64	6.32 to 8.96	−0.84	−2.0 to 0.32	0.158	−0.17	−0.4 to 0.06
Control group A	8.86	7.48 to 10.24	−0.88	−2.12 to 0.35	0.159	−0.18	−0.43 to 0.07
Control group B	10.05	8.54 to 11.56	−0.07	−1.43 to 1.29	0.917	−0.01	−0.29 to 0.26
Effect I vs A			0.05	−1.64 to 1.74	0.956	0.01	−0.33 to 0.35
Effect I vs B			−0.76	−2.55 to 1.02	0.402	−0.15	−0.51 to 0.21
Effect A vs B			−0.81	−2.65 to 1.02	0.386	−0.16	−0.54 to 0.21
CFQ-Distractions (0–36)
Intervention group	15.85	14.24 to 17.46	−1.47	−2.94 to 0.004	0.051	−0.24	−0.48 to 0.001
Control group A	17.29	15.62 to 18.97	−1.28	−2.83 to 0.27	0.106	−0.21	−0.47 to 0.05
Control group B	17.31	15.5 to 19.13	−1.03	−2.72 to 0.66	0.234	−0.17	−0.45 to 0.11
Effect I vs A			−0.19	−2.32 to 1.95	0.864	−0.03	−0.38 to 0.32
Effect I vs B			−0.44	−2.68 to 1.80	0.700	−0.07	−0.45 to 0.30
Effect A vs B			−0.25	−2.55 to 2.04	0.829	−0.04	−0.42 to 0.34

Effect sizes are depicted using Cohen’s d (standardized mean difference). PSS perceived stress scale, GHQ general health questionnaire, BNSQ basic Nordic sleep questionnaire, CFQ cognitive failures questionnaire, SD standard deviation, CI confidence interval, M mean

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