Prevalence and incidence of arterial hypertension in Peru: a systematic review and meta-analysis

Abstract

Objective. To determine the prevalence and incidence of arterial hypertension, as well as the prevalence of previous diagnosis of arterial hypertension (self-reported) among the adult population of Peru. Materials and methods. Systematic review and meta-analysis of epidemiological studies available in LILACS, EMBASE, MEDLINE and Global Health. Studies were included if they followed a random sampling approach in adult population. Screening and assessment of manuscripts was carried out independently by two researchers. A random-effects meta-analysis was conducted to quantify the overall prevalence and incidence of hypertension. The Newcastle-Ottawa scale was used to assess the risk of bias in the manuscripts. Results. A total of 903 papers were screened, and only 15 were included in the estimation of hypertension prevalence, 8 in the assessment of previous hypertension diagnosis, and 4 for incidence estimations. The pooled prevalence of hypertension was 22.0% (95% CI: 20.0% - 25.0%; I2=99.2%). This estimate was lower in national studies [20.0% (95% CI: 17.0% - 22.0%; I2=99.4%] than in sub-national studies [24.0% (95% CI: 17.0% - 30.0%; I2=99.2%]. The pooled prevalence of previous hypertension diagnosis was 51.0% (95% CI:
43.0% - 59.0%; I2=99.9%). The pooled incidence of hypertension was 4.2 (95% CI: 2.0 - 6.4; I2=98.6%) per 100 person-years. The included studies did not present high risk of bias. Conclusions. Our findings show that one in five Peruvians has hypertension, and that four new cases appear per 100 persons per year; in addition, only half of the subjects with hypertension are previously diagnosed.