The Impact of Epidemic Violence on the Prevalence of Psychiatric Disorders in Sao Paulo and Rio de Janeiro, Brazil

Abstract

BackgroundViolence and other traumatic events, as well as psychiatric disorders are frequent in developing countries, but there are few population studies to show the actual impact of traumatic events in the psychiatric morbidity in low and middle-income countries (LMIC).AimsTo study the relationship between traumatic events and prevalence of mental disorders in São Paulo and Rio de Janeiro, Brazil.MethodsCross-sectional survey carried out in 2007–2008 with a probabilistic representative sample of 15- to 75-year-old residents in Sao Paulo and Rio de Janeiro, Brazil, using the Composite International Diagnostic Interview.ResultsThe sample comprised 3744 interviews. Nearly 90% of participants faced lifetime traumatic events. Lifetime prevalence of any disorders was 44% in Sao Paulo and 42.1% in Rio de Janeiro. One-year estimates were 32.5% and 31.2%. One-year prevalence of traumatic events was higher in Rio de Janeiro than Sao Paulo (35.1 vs. 21.7; p<0.001). Participants from Rio de Janeiro were less likely to have alcohol dependence (OR = 0.55; p = 0.027), depression (OR = 0.6; p = 0.006) generalized anxiety (OR = 0.59; p = 0.021) and post-traumatic stress disorder (OR = 0.62; p = 0.027). Traumatic events correlated with all diagnoses – e.g. assaultive violence with alcohol dependence (OR = 5.7; p<0.001) and with depression (OR = 1.7; p = 0.001).ConclusionOur findings show that psychiatric disorders and traumatic events, especially violence, are extremely common in Sao Paulo and Rio de Janeiro, supporting the idea that neuropsychiatric disorders and external causes have become a major public health priority, as they are amongst the leading causes of burden of disease in low and middle-income countries. The comparison between the two cities regarding patterns of violence and psychiatric morbidity suggests that environmental factors may buffer the negative impacts of traumatic events. Identifying such factors might guide the implementation of interventions to improve mental health and quality of life in LMIC urban centers.

Prevalence of depression morbidity among Brazilian adults: a systematic review and meta-analysis

“…Most of the surveys included persons 18 years old and older. [22][23][24][25][26][27][28][29][36][37][38]40,41,43,44,[50][51][52][55][56][57][58][59][60][61][62][63] Three studies did not primarily aim to assess the prevalence of depression. 30,35,47 Six national studies were included.…”

“…30,35,47 Six national studies were included. [23][24][25][26][27][28][29][30] Nine studies were conducted in the Southeast region, 22,[31][32][33][43][44][45][50][51][52][53][54][55][56][57][58][59][60][61][62][63] eight in the South region, [31][32][33][34][35][36][37][38][39][40][41][42]46 two in the Northeast region [47][48][49] and one in the Mid-West region of Brazil. [31][32][33] Eight studies were conducted i...…”

“…[23][24][25][26][27][28]30,35,45,48,49,53,62,63 To screen for the prevalence of depressive symptoms, nine studies considered self-reported depression, [23][24][25][26][27][28]30,34,46,47,53 and 11 used the following tools: 1) Adult Psychiatric Morbidity Questionnaire (Questioná rio de Morbidade Psiquiá trica de Adultos, QMPA) [31][32][33]48,49 ; 2) Beck Depression Inventory (BDI) 35,62,63 ; 3) Center for Epidemiologic Studies Depression Scale (CES-D) 29 ; 4) Composite International Diagnostic Interview ShortForm (CIDI SF) 54 ; 5) Edinburgh Postnatal Depression Scale (EPDS) 42 ; 6) Patient Health Questionnaire (PHQ-9) 40 ; and 7) Primary Care Evaluation of Mental Disorders (PRIME-MD). 45 The seven studies that screened for major depressive disorder used the following tools: the Composite International Diagnostic Interview (CIDI), 22,43,44,[50][51][52]…”

“…22,43,44,[50][51][52][55][56][57][58][59][60][61] All five studies used the CIDI as a screening tool. The prevalence was higher among women (11.3%; 95%CI 9.4-13.2; I 2 = 81.7%) and lower among men (4.0%; 95%CI 2.8-5.3; I 2 = 76.1%).…”

“…The lifetime prevalence of major depressive disorder was assessed in four studies: three used the CIDI as a screening tool, 43,44,[55][56][57][58][59][60][61] and one used the DSM-IV. 41 Figure 1 Study search, selection, and inclusion flowchart.…”