Table 3

Numbers needed to treat

Intention-to-treat data
Post-treatment Follow-up
NNT 95% CI NNT 95% CI
NNT, number needed to treat; PANSS, Positive and Negative Syndrome Scale; PSYRATS, Psychotic Symptoms Rating Scale.
PANSS positive symptom scale 8 3-∞ 7 2-∞
PSYRATS
     Auditory hallucination scale
         Factor 1: Physical characteristics 3 2-55 100 3-∞
         Factor 2: Emotional characteristics 6 2-∞ 50 4-∞
         Factor 3: Cognitive interpretation 3 2-13 33 3-∞
     Delusion scale
         Factor 1: Cognitive interpretation 4 2-∞ 10 3-∞
         Factor 2: Emotional characteristics 12 3-∞ 6 2-∞