The aims of this study are as follows: (1) To assess the prevalence of hypothyroidism among antenatal mothers. (2) To find out the factors associated with Hypothyroidism among antenatal mothers and (3) To find the association between the prevalence of hypothyroidism and socio-demographic factors with their selected sociodemographic variables. Materials and Methods: Study approach- This was a descriptive survey and follows the study design as cross sectional descriptive research. The population involved in this study was antenatal mothers visiting various Hospitals of Bagalkot district. Samples are antenatal mothers visiting antenatal department of HSK Hospital and Research Centre, Bagalkot. Sample size is 100 (Total) antenatal mothers were included in the study. Further data were collected by structured questionnaire. Results: After data collection, the data are organized and analyzed with the help of mean, median and percentage. A total of 100 antenatal mothers were included in the study 44% antenatal mothers had TSH values more than between 4-6 µIU/ml, among these 20 antenatal mothers had TSH value above 5.50 µIU/ml and were diagnosed with hypothyroidism during pregnancy. 80% of antenatal mothers were found euthyroid during pregnancy and 20% of antenatal mothers having prevalence of hypothyroidism during pregnancy. Conclusion: After thorough analysis of the data, researcher concluded that there is prevalence of hypothyroidism (20%) among antenatal mothers at HSK Hospital and Research centre of Bagalkot, Karnataka. This study recommends that early screening of hypothyroidism may be desirable in our country, in early identification of hypothyroidism in pregnancy.

Keywords : Prevalence, Hypothyroidism, Associated Factors, Antenatal Mothers, Thyroid Stimulating Hormone (TSH).