The efficacy of Personalized Normative Feedback interventions across addictions: A systematic review and meta-analysis (original) (raw)
Fig 3
The efficacy of pure PNF on symptom severity across follow-up periodsa, b.
a Number of participants in all studies: 0–3 months PNF n = 3396, control n = 1364; 4–11 months PNF n = 2753, control n = 950; 12–23 months PNF n = 1330, control n = 316. b Insufficient studies were available for meta-analyses at 24 months+.