Why does my forest plot say a study's result is statistically significant when it's not?

16 April 2020 0 788 Report

I understand that the forest plot is using the mean, SD and confidence interval to gauge this, I'm using a random effects forest plot. I am looking at MPV and tinnitus.

MPV (fl)

tinnitus 8.76 ± 1.12

control 10.35 ± 1.34

Statistical Significance: 0.312 (not significant)

The independent-samples t-test and Kruskal-Wallis test were used to examine differences between the groups. Statistical significance was defined as p < 0.05.

My forest plot under Mean Difference (IV, random, 95% confidence interval) says: 1.59 [1.26, 1.92], with the result being very significant as the line of no effect is at zero.

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