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Table 2 Comparisons between intervention group and control group on outcome measures (knowledge of ADHD, attitude to ADHD, and knowledge of behavioural intervention)

From: Effect of attention-deficit–hyperactivity-disorder training program on the knowledge and attitudes of primary school teachers in Kaduna, North West Nigeria

Variable Intervention group mean (SD) Control group mean (SD) F value (1,143) p value Effect size (Cohen d)
Pre
n = 76
Post
n = 76
Difference Pre
n = 71
Post
n = 71
Difference
Knowledge of ADHD 11.03 (4.13) 14.74 (3.25) t = −8.33
p < 0.001
11.04 (4.01) 11.80 (3.50) t = −1.67
p = 0.10
38.1 0.000 0.9
Attitude towards ADHD 93.59 (10.28) 88.08 (7.67) t = 5.22
p < 0.001
93.49 (8.14) 92.37 (8.94) t = 0.93
p = 0.35
11.0 0.001 0.5
Knowledge of behavioural intervention 7.39 (2.88) 8.37 (2.12) t = −3.11
p = 0.003
6.54 (2.69) 7.04 (2.36) t = −1.42
p = 0.16
9.5 0.002 0.6