Iodine status, impact of knowledge, and practice for adequate iodized salt utilization in house hold at North West Ethiopia

INTRODUCTION: Iodine is one of the crucial micronutrients required for the normal growth of humans from the fetal stage to adulthood through the synthesis of thyroxin (t3) and triiodothyronine (t4) hormones in the thyroid gland for regulation of metabolism, protein synthesis, and brain development. This study aimed to assess iodine status, the impact of knowledge and practice for adequate iodized salt utilization in household levels in North West Ethiopia. METHOD: A population-based cross-sectional study was carried out using multistage sampling among 1398 residents from 28 December 2021 to 30 January 2022. A systematic random sampling technique was used to select the study participants. The collected data were entered into Epi-Data version 3.1 and then exported to STATA/R version 14 for further analysis. An adjusted odds ratio with 95% CI was used to declare statistical significance at p < 0.05. RESULT: The overall mean (±SD) age of participants was 34.9 (±12.8) years. About 678 (48.5%) had 15–80 ppm, 23 (1.6%) had >80 ppm, 533 (38.13%) had 1.1 ppm to 14.9 ppm, and 147 (10.5) had no iodine in salt (0 ppm) after assessed by Rapid Test Kit. Only 48.5% of the sampled household had used adequate iodized salt with ≥15 ppm. The overall burden of goiter was estimated at 11.4/1000 population. Adequate iodized salt utilization was significantly associated with having formal education (adjusted odds ratio = 1.89: 95% confidence interval: 1.4, 2.6, p = 0.001), monthly income ≥5000 ETB/month (adjusted odds ratio = 1.99: 95% confidence interval: 1.5, 2.9, p = 0.001), and good knowledge score (adjusted odds ratio = 1.6: 95% confidence interval: 1.12, 2.6, p = 0.03) were predictors for proper iodized salt utilization. CONCLUSION: Coverage of adequately iodized salt was low and respondents’ formal education, monthly income ≥5000 Ethiopian Birr/month, and good knowledge score were all significantly associated with proper iodized salt utilization. While the prevalence of goiter was not significantly identified as a public health problem as compared in the regions, however, in light of previous iodine deficiency in this region of Ethiopia, the salt iodization program should be done continually.