Prevalence of depression in cardiovascular patients in Iran: A systematic review and meta-analysis from 2000 to 2017.

BACKGROUND: In both developed and developing countries, cardiovascular disease is on the rise, representing nowadays one of the main challenges for the health systems worldwide. This increase generates relevant costs. The aim of this study was to conduct a systematic and meta-analytical review of the prevalence of depression in cardiovascular patients in Iran. METHODS: Articles written in English and Persian were searched from January 2000 to July 2017 in different scholarly databases. RESULTS: 12 studies were retained and included in the current meta-analysis. Selected studies were published between 2008 and 2016. The number of patients participating in these studies was 9292. Based on the random-effects model, the prevalence of depression in cardiovascular patients in Iran was 47% [95% confidence interval or CI 38-56], I2=98.2% with P = 0.000. The relative risk (RR) of depression in cardiovascular patients yielded a value of 1.30 [95%CI 1.05-1.62] with P < 0.001. Women are more at risk for depression than men. CONCLUSION: The current meta-analysis estimated the prevalence of depression among cardiovascular patients in Iran. The prevalence found computed by the present study is higher than the figures found in developed countries. Depression with cardiovascular disease causes many problems for these patients, and early diagnosis and treatment significantly helps in improving quality of life, as well as saving costs and resources.

Depression among Iranian nurses: A systematic review and meta-analysis.

Background: Depression is one of the most commonly diagnosed mental disorders. Nurses and other hospital service providers are a group at high risk for developing depression. Thus, knowing the prevalence of depression among nurses can help the health care decisionmakers to plan ad hoc prevention programs to control depression in this group. This study was conducted to quantitatively assess the prevalence of depression in nurses by performing a systematic review and meta-analysis. Methods: ISI/Web of Science (WoS), PubMed/MEDLINE via Ovid, PsychInfo, and Embase, as well as Iranian databases such as Irandoc, SID, and Magiran were searched from January 2000 to March 2017. To calculate the pooled prevalence rate, the random effects model based on the DerSimonian-Laird approach was used. I2 and the Q tests were used to examine heterogeneity among studies. To investigate the causes and sources of heterogeneity, the impact of such variables as quality, sample size, geographic region, and criteria used to diagnose depression was analyzed performing subgroup analyses. The quality of reviewed studies was assessed according to the 22-item STROBE checklist. Sensitivity analysis was performed to investigate the stability and robustness of the obtained results. All data were analyzed using the "meta" package included in the R Software Version 3.4.0. Results: A total of 30 studies were retained in the current investigation. The overall prevalence of depression was 22% [95%CI 19- 27] among nurses, with a high statistically significant heterogeneity (I2= 94% and Q-test= 479.87). Conclusion: This rate was higher than the prevalence of depression among the general population in Iran. Presence of happy nurses with good mental state at hospitals is essential for promoting the care provided to patients.