Prevalence of major depression and associated correlates in Latvian primary care population: results from the National Research Program BIOMEDICINE 2014-2017.

Purpose and aim. In Latvia, the 12-month prevalence of depression in the general population has been estimated at 7.9%, but the data of the National Health Service show that general practitioners (GP's) saw only 3514 unique patients with a diagnosis of mood disorders in 2014. This is the first study conducted at the national level that was aimed to estimate the point and lifetime prevalence of depression and associated factors in primary care settings in Latvia.Materials and methods. This study was conducted at 24 primary care facilities in 2015. During a 1-week period, all consecutive adult patients were invited to complete the study questionnaires. Within a period of 2 weeks, the respondents were interviewed over the phone using the Mini International Neuropsychiatric Interview (M.I.N.I.), Version 6.0.0. A hierarchical multivariate data analysis was performed.Results. The study population consisted of 1485 patients. According to the M.I.N.I., 28.1% (95% CI 25.9-30.4) of the patients had at least one depressive episode in the past, and 10.2% (95% CI 8.7-11.8) had current depression. In the final multivariate analysis model, current major depression was associated with the female gender (OR 2.01), basic or unfinished basic education (OR 1.86), loss of marital ties (OR 1.86), and gastrointestinal (OR 3.46) and oncological (OR 2.26) diseases as a reason for visiting the GP.Conclusions. The prevalence of major depression in primary care is consistent with that in other European countries but is significantly underdiagnosed. Enhanced training in Latvian primary care settings may improve clinical outcomes.

Validity of the PHQ-9 and PHQ-2 to screen for depression in nationwide primary care population in Latvia.

BACKGROUND: Depression is highly underdiagnosed in primary care settings in Latvia. Screening for depression in primary care is potentially an efficient way to find undetected case s and improve diagnostics. We aimed to validate both a nine-item and two-item Patient Health Questionnaire (PHQ-9 and PHQ-2) in the Latvian and Russian languages in primary care settings using a representative sample in Latvia. MATERIALS AND METHODS: The study was carried out within the framework of the National Research Program BIOMEDICINE to assess the prevalence of mental disorders at 24 primary care facilities. During a 1-week period, all consecutive adult patients were invited to complete the PHQ-9 and PHQ-2. Criterion validity was assessed against the Mini International Neuropsychiatric Interview (MINI). RESULTS: There were 1467 patients who completed the PHQ-9 and the MINI. Overall, the PHQ-9 items showed good internal reliability (Cronbach's alpha 0.81 for Latvian version and 0.79 for Russian version of the PHQ-9). A cut-off score of 8 or greater was established for the PHQ-9 (sensitivity 0.75 and 0.79, specificity 0.84 and 0.80 for Latvian and Russian languages, respectively). For the PHQ-2, a score of 2 or higher (sensitivity 0.79 and 0.79, specificity 0.65 and 0.67 for Latvian and Russian languages) detected more cases of depression than a score of 3 or higher. CONCLUSIONS: We suggest GPs ask patients to respond to the first 2 questions of the PHQ-9. If their score is positive, the patients should then complete the PHQ-9.

Association of Depression and Anxiety With the 10-Year Risk of Cardiovascular Mortality in a Primary Care Population of Latvia Using the SCORE System.

Background: Depression and anxiety have been recognized as independent risk factors for both the development and prognosis of cardiovascular (CV) diseases (CVD). The Systematic Coronary Risk Evaluation (SCORE) function measures the 10-year risk of a fatal CVD and is a crucial tool for guiding CV patient management. This study is the first in Latvia to investigate the association of depression and anxiety with the 10-year CV mortality risk in a primary care population. Methods: This cross-sectional study was conducted at 24 primary care facilities. During a 1-week period in 2015, all consecutive adult patients were invited to complete a nine-item Patient Health Questionnaire (PHQ-9) and a seven-item Generalized Anxiety Disorder scale (GAD-7) followed by sociodemographic questionnaire and physical measurements. The diagnostic Mini International Neuropsychiatric Interview (M.I.N.I.) was administered by telephone in the period of 2 weeks after the first contact at the primary care facility. A hierarchical multivariate analysis was performed. Results: The study population consisted of 1,569 subjects. Depressive symptoms (PHQ-9 ≥10) were associated with a 1.57 (95% confidence interval (CI): 1.06-2.33) times higher odds of a very high CV mortality risk (SCORE ≥10%), but current anxiety disorder (M.I.N.I.) reduced the CV mortality risk with an odds ratio of 0.58 (95% CI: 0.38-0.90). Conclusions: Our findings suggest that individuals with SCORE ≥10% should be screened and treated for depression to potentially delay the development and improve the prognosis of CVD. Anxiety could possibly have a protective influence on CV prognosis.