Table 8Evidence summary table for trials of non-facilitated self-help

Mixed anxiety population – non-facilitated bibliotherapy versus non-active controlGAD-only population – non-facilitated bibliotherapy versus waitlist controlGAD-only population – non-facilitated computer therapy versus waitlist controlCombined population – non-facilitated self-help versus non-active control (waitlist control or treatment as usual)Combined population – non-facilitated self-help versus waitlist controlCombined population – non-facilitated self-help versus treatment as usualMixed anxiety population – non-facilitated bibliotherapy versus non-facilitated audiotherapy
No. trials (total participants)4 RCTs (164)1 RCT (38)1 RCT (231)6 RCTs (433)5 RCTs (202)1 RCT (38)1 RCT (22)
Study ID
BOWMAN1997HOUGHTON2008
MAUNDER2009*KASSINOVE1980
Length of follow-up(1) None
(2) 4 weeks (not reportable)
(3)–(4) None
3 monthsNone(1) 3 months
(2)–(3) None
(4) 4 weeks (not reportable)
(5)–(6) None
(1) 3 months
(2)–(5) None
4 weeks (not reportable)None
Benefits
Anxiety (self-rated)SMD −0.76 (−1.12, −0.40)
K = 4, N = 142
Quality: moderate
SMD −1.06 (−1.77, −0.35)
K = 1, N = 35
Quality: high
SMD −0.61 (−1.01, −0.21)
K = 1, N = 100
Quality: high
SMD −0.74 (−0.99, −0.49)
K = 6, N = 277
Quality: moderate
SMD −0.74 (−1.01, −0.48)
K = 5, N = 243
Quality: moderate
SMD −0.70 (−1.40, −0.01)
K = 1, N = 34
Quality: moderate
SMD −0.55 (−1.40, 0.31)
K = 1, N = 22
Quality: moderate
Anxiety (self-rated) at follow-up-SMD −1.06 (−1.83, −0.29)
K = 1, N = 30
-SMD −1.06 (−1.83, −0.29)
K = 1, N = 30
SMD −1.06 (−1.83, −0.29)
K = 1, N = 30
--
Depression (self-rated)SMD −0.78 (−1.27, −0.30)
K = 2, N = 85
Quality: moderate
--SMD −0.78 (−1.27, −0.30)
K = 2, N = 85
Quality: moderate
---
Non-remissionRR 0.68 (0.53, 0.87)
K = 2, N = 76
Quality: moderate
--RR 0.68 (0.53, 0.87)
K = 2, N = 76
Quality: moderate
RR 0.65 (0.46, 0.92)
K = 1, N = 42
Quality: high
RR 0.71 (0.50, 1.01)
K = 1, N = 34
Quality: high
-
Harm
Discontinuation due to any reasonRR 0.50 (0.09, 2.84)
K = 2, N = 80
Quality: low
RR 2.00 (0.20, 20.24)
K = 1, N = 38
Quality: moderate
RR 0.55 (0.39, 0.77)
K = 1, N = 231
Quality: moderate
RR 0.56 (0.40, 0.78)
K = 4, N = 349
Quality: low
RR 0.55 (0.37, 0.82)
K = 3, N = 311
Quality: moderate
RR 0.90 (0.14, 5.74)
K = 1, N = 38
Quality: low
Did not provide dropout data
*

Treatment as usual.

Treatment as usual.

From: 6, LOW-INTENSITY PSYCHOLOGICAL INTERVENTIONS

Cover of Generalised Anxiety Disorder in Adults
Generalised Anxiety Disorder in Adults: Management in Primary, Secondary and Community Care.
NICE Clinical Guidelines, No. 113.
National Collaborating Centre for Mental Health (UK).
Leicester (UK): British Psychological Society; 2011.
Copyright © 2011, The British Psychological Society & The Royal College of Psychiatrists.

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