Fig. 2

Structural equation model (SEM) with fitted coefficients. SEM goodness of fit: chi square = 384.39 DF = 231 normed chi square = 1.66 CFI = 0.88 RMSEA = 0.05 and SRMR = 0.05. Patients’ QoL, symptoms severity and patients’ QoL are latent variables (with arrows pointing to their respective indicators). The patients’ QoL is composed of the 8 dimensions of the S-QoL 18: Schizophrenia Quality of Life 18 items; PsW: Psychological Well-being dimension of the S-QoL 18; SE: Self-Esteem; RFa: Family Relationships; RFr: Relationships with Friends; RE: Resilience; PhW: Physical Well-being; AU: Autonomy; and SL: Sentimental Life. The psychotic symptoms severity is composed of the 5 factors of the PANSS (Positive and Negative Syndrome Scale): negative, positive, excitation, anxiety/depression and cognitive factors. The caregivers’ QoL is composed of the 7 dimensions of the S-CGQoL (Schizophrenia Caregiver Quality of Life questionnaire): PsPhW (Psychological and Physical Well-being); PsBDL (Psychological Burden and Daily Life); RS (Relationships with Spouse); RPT: Relationships with Psychiatric Team; RFa: Relationships with Family; RFr: Relationships with Friends; MB: Material Burden. Educational level, ethnicity, gender and employment status are independent factors (observed variables)