Effectiveness of an Educational Video on the Knowledge of Influenza and Pertussis Vaccination among Pregnant Women: A randomized controlled trial
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Abstract
Objective: To compare the knowledge of pertussis and influenza vaccines between pregnant women who received vaccine-related information through educational video and those who did not.
Materials and Methods: A randomized clinical trial was conducted at the antenatal care clinic at Siriraj Hospital. A total of 270 pregnant women, between 20-36 weeks of gestation, were randomly assigned to either receive (video group, n = 135) or not receive (control group, n = 135) information about pertussis and influenza vaccination via educational video. A questionnaire was administered before and after the intervention to assess knowledge of pertussis and influenza vaccines. Knowledge scores were compared between the two groups.
Results: The baseline characteristics of the two groups were similar, except that women in the control group were more likely to have prior knowledge about the pertussis vaccine than those in the video group (p = 0.027). Although pre-test knowledge scores were comparable, the post-test scores in the video group were significantly higher than those in the control group (11 vs 8 for pertussis and 8 vs 7 for influenza vaccination, p < 0.001). A higher proportion of women in the video group exhibited good knowledge (score > 8/15 for pertussis and > 6/11 for influenza vaccination) compared to the control group (88.1% vs 60% for pertussis and 91.1% vs 73.3% for influenza vaccination, p < 0.001). Vaccination rates were similar between the two groups: 94.4% for influenza, 96.3% for pertussis and 91.1% for both vaccines.
Conclusion: Incorporating an educational video on pertussis and influenza vaccination into routine antenatal care significantly increased pregnant women’s knowledge score.
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