a decreasing trendP < 0.001
According to the Cochran-Armitage trend test, the incidence of psychogenic AEFIs showed a decreasing trend from 2020 to 2023, with statistical significance (Z=-5.427, P < 0.001).
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Surveillance of psychogenic adverse events following immunization in Zhejiang, China, 2020-2023.
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an increasing trendP < 0.001
Regarding age distribution, the number of psychogenic AEFI cases in the age groups ≤ 6, 7–17, and ≥ 18 years were 20, 61, and 340, respectively, corresponding to a proportion rate of 0.02%(95% CI: 0.01–0.03), 0.07%(95% CI: 0.05–0.09), and 0.38%(95% CI: 0.34–0.42), respectively, showing an increasing trend with age ( P < 0.001).