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. 2021 Apr 13;21:210. doi: 10.1186/s12909-021-02646-3

Table 2.

Comparison of the mean scores of written examinations of two groups

Study groups No. Mean score of written examination
(Maximum score = 40)
Std.
deviation
Std Error of mean Confidence interval of the difference t- score df P value
Intervention group n1 = 30 29.85 3.22 0.587 4.8876 to 8.6924 7.14 58

< 0.05

(significant)

Control group n2 = 30 23.06 4.09 0.746