RESUMO
Preconception care (PCC) increases the chance of couple's being healthy and having a healthier baby. It is an important strategy to prevent maternal and perinatal complications. The level of knowledge on preconception care increases its uptake. It is also considered as an input for further intervention of reduction in maternal and neonatal mortality enabling progress towards sustainable development goals (SDGs). Therefore, this systematic review and meta-analysis aimed to estimate the pooled knowledge level of PCC and its association with family planning usage among women in Ethiopia. All observational studies regardless of publication status were retrieved. Important search terms were used to search articles in Google scholar, African Journals Online, CINHAL, HINARI, Science Direct, Cochrane Library, EMBASE, and PubMed/Medline. Independent critical appraisal of retrieved studies was done using the Newcastle-Ottawa assessment checklist. The meta-analysis was conducted using STATA version 14 software. The I2 statistics were used to test heterogeneity, whereas publication bias was assessed by Begg's and Egger's tests. The results of the meta-analysis were explained in the Odds ratio (OR) with a 95% confidence interval (CI) and presented using forest plots. A total of seven articles were included in the current systematic review and meta-analysis. Based on the data retrieved from the articles, 35.7% of women in Ethiopia had good knowledge about preconception care. The subgroup analysis based on region revealed the lowest (22.34%) and highest (45.06%) percentage of good knowledge on preconception care among women who were living in Amhara and Oromia regions, respectively. Moreover, women who utilized family planning services were three and more times (OR 3.65 (95% CI 2.11, 6.31)) more likely to have a good level of knowledge about preconception care. One-third of Ethiopian women had good knowledge about preconception care. Family planning utilization had a positive impact on women's knowledge of preconception care.