Table 3.

Comparison of scores of NI competency and its dimensions between the intervention and control groups at pretest and posttest

Variables	Groups	Pre test M ± SD	Post test M ± SD	Mean difference	Size effect (Cohen d)	Statistic ta & p
Informatics competency total	Intervention Control Statistic tb & p Effect size (Cohen d)	78.79 ± 26.52 82.69 ± 19.29 t = − 0.45 p = 0.65 0.14	114.29 ± 20.68 81.76 ± 17.99 t = 6.54 p = 0.001 1.57	35.5 − 0.93	1.33 0.044	t = 7.71 p = 0.001 t = − 1.39 p = 0.25
Computer literacy	Intervention Control Statistic tb & p Effect size (Cohen d)	28.46 ± 10.28 28 ± 8.27 t = 0.194 p = 0.85 0.04	39.70 ± 6.78 28.03 ± 8.32 t = 6.05 p = 0.001 1.72	11.24 0.03	1.09 0.05	t = 7.06 p = 0.001 t = 0.37 p = 0.71
Informatics literacy	Intervention Control Statistic tb & p Effect size (Cohen d)	33.51 ± 11.45 34.70 ± 8.33 t = − 9.42 p = 0.67 0.10	48.77 ± 9.46 34.43 ± 7.79 t = 6.44 p = 0.001 1.51	15.26 − 0.27	1.33 0.03	t = 6.93 p = 0.001 t = − 1.39 P = 0.30
Informatics management skills	Intervention Control Statistic tb & p Effect size (Cohen d)	17.80 ± 6.78 19.88 ± 5.21 t = − 1.27 p = 0.27 0.30	25.80 ± 5.72 19.30 ± 5.40 t = 4.55 p = 0.001 1.13	8.00 − 0.58	1.17 0.11	t = 7.80 p = 0.001 t = 1 p = 0.32

^a Paired t-test

^b Independent t-test