Fear is a natural and necessary emotion, responding to exogenous factors to protect and bring about a sense of security for each
individual. During pregnancy, fear helps pregnant women prepare fully a good birth. However, when fear is uncontrolled, it affects
heavily to the physical and mental well-being of women known as "fear of childbirth - FOC". Objectives: To determine the prevalence
of FOC among pregnant women in the third trimester of pregnancy at Hung Vuong hospital and some related factors. Methods: A
cross-sectional study of 385 women in the third trimester of antenatal care at Hung Vuong Hospital met the criteria for sample
selection from November 1, 2018 to November 30, 2019. Results: The prevalence of FOB was 30.91% 95%CI [26.29 - 35.53]. In which:
in comparison group, the nulliparity was 34.57% CI 95% [29.82-39.32] and the multiparity was 28.25% with 95% CI [26.41-35.41].
Some factors related to the fear of childbirth: (1) Living with husband with OR = 0.20; 95% CI [0.15 - 0.48]; p = 0.02; (2) Childbirth
with vagina operator with OR = 47.87; 95% CI [16.7-136.8], p <0.001; (3) The increase of gestational age (for every standard
deviation increase by 23 days) with OR = 2.3, 95% CI [1.9 - 2.7], p <0.001 ; (4) Refer to information from books and newspapers with
OR = 2.5, 95% CI [1.7 - 3.5], p <0.001; (5) Refer to information from health workers with OR = 0.15; 95% confidence interval [0.1 -
0.2], p <0.001. Conclusion: Fear of childbirth is a very important issue in pregnancy examination and management.
Keywords: Fear of childbirth, cross-sectional study, cut-off, fear of birth scale