showed a trendP = 0.0510
Although the intervention group showed a trend toward lower incidence, the difference was not statistically significant (RR = 0.31, 95% CI: 0.09 to 1.01; Z = −1.95, P = 0.0510).
Although the intervention group showed a trend toward lower incidence, the difference was not statistically significant (RR = 0.31, 95% CI: 0.09 to 1.01; Z = −1.95, P = 0.0510).