TABLE 2.
Days of absence | Hours of absence | |||||
Mean (SD) | p-Value | Effect size | Mean (SD) | p-Value | Effect size | |
Gender | <0.001 | d = 0.20 | <0.001 | d = 0.11 | ||
Boys | 3.52 (4.76) | 4.63 (8.65) | ||||
Girls | 4.54 (5.28) | 5.66 (9.63) | ||||
Age | <0.001 | η2 = 0.03 | <0.001 | η2 = 0.03 | ||
16 (n = 2984) | 3.40 (4.55) | 4.00 (7.85) | ||||
17 (n = 2991) | 3.82 (4.69) | 4.46 (8.22) | ||||
18–19 (n = 2238) | 5.22 (5.92) | 7.89 (11.50) | ||||
School program | 0.005 | d = 0.07 | 0.864 | d = 0.006 | ||
General studies | 3.86 (4.50) | 4.98 (8.81) | ||||
Vocational studies | 4.19 (5.46) | 5.03 (9.25) |
SD, standard deviation; d, Cohen’s d; η2: eta-squared. Effect size for t-test: Cohen’s d, for ANOVA: eta-squared.