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Table 2 Results of the meta-analysis

From: The effectiveness of one-to-one peer support in mental health services: a systematic review and meta-analysis

Outcome FU k N1/N2 RR 95% CI z (p-value) I2 Q (p-value)
Hospitalised 3–24 5 257/240 0.86 0.66, 1.13 1.1 (0.270) 38% 6.5 (0.170)
Outcome FU k N1/N2 SMD 95% CI z (p-value) I2 Q (p-value)
Days in hospital 9–24 5 242/211 −0.10 −0.34, 0.14 0.8 (0.426) 39% 6.6 (0.160)
Overall psychiatric symptoms 6–24 6 440/417 −0.01 − 0.21, 0.20 0.0 (0.961) 53% 10.7 (0.057)
Quality of life 12–24 5 356/332 0.08 −0.11, 0.26 0.8 (0.424) 32% 5.9 (0.206)
Recovery 12–18 3 300/293 0.22 0.01, 0.42 2.0 (0.042 36% 3.1 (0.211)
Empowerment 6–12 4 272/247 0.23 0.04, 0.42 2.3 (0.020) 14% 3.5 (0.323)
Satisfaction with services 12–18 2 140/146 0.19 −0.05, 0.42 1.6 (0.116) 0% 0.0 (0.878)
General and social functioning 6–12 3 100/81 0.01 −0.32, 0.35 0.1 (0.937) 21% 2.5 (0.283)
Social network support 12–24 4 258/254 0.09 −0.25, 0.42 0.5 (0.602) 67% 9.2 (0.027)
Working alliance – client rated 6–24 3 112/101 0.24 −0.03, 0.51 1.7 (0.080) 0% 0.6 (0.736)
Working alliance – staff rated 6–24 2 69/70 0.15 −0.18, 0.48 0.9 (0.379) 0% 0.3 (0.594)
  1. Key: FU follow-up; k – number of trials; N1 – sample size in intervention arm; N2 – sample size in control arm; RR Risk ratio, SMD Standardised mean difference, CI Confidence interval; z(p-value) – test of overall effect; I2 – measure of heterogeneity; Q(p-value) – Bartlett’s test of heterogeneity