Means, standard deviations, and group comparisons between art therapy and treatment as usual for psychopathological symptoms (SAPS, SANS, CDSS) and global assessment of functioning (GAF) in per-protocol and intention-to-treat samples at post-treatment and follow-up visits.

1: nAT = 16/nTAU = 19;
2: nAT = 16/nTAU = 20;
3: nAT = 24/nTAU = 29.
Per-protocol sample: ANCOVA factors: intervention, gender; covariates: verbal IQ, baseline value of dependent variable; F[df]; *: p<0.05; **: p<0.01; η2p; corrected p-value (Bonferroni) p<0.0125 (significant results underlined).
Intention-to treat sample: descriptive statistics and ANCOVA on multiply imputed data (m = 50): covariates: intervention, baseline value of dependent variable; pooled F[df]; *: p<0.05; †: p = 0.078 (AT: art therapy; TAU: treatment as usual; SANS: Scale for the assessment of negative symptoms; SAPS: Scale for the assessment of positive symptoms; CDSS: Calgary depression scale for schizophrenia; GAF: Global assessment of functioning).
Means, standard deviations, and group comparisons between art therapy and treatment as usual for psychopathological symptoms (SAPS, SANS, CDSS) and global assessment of functioning (GAF) in per-protocol and intention-to-treat samples at post-treatment and follow-up visits.