Variable | n | Year 2017 | n | Year 2018 | ||||
---|---|---|---|---|---|---|---|---|
Mean score | SD | Mean score comparison | Mean score | SD | Mean score comparison | |||
Gender | ||||||||
 Male | 142 | 411.89 | 27.14 | Independent t-test, t(444) = 4.561, p = 0.000*, d = 0.455 | 161 | 414.46 | 24.77 | Independent t-test, t(506) = 4.78, p = 0.000*, d = 0.462 |
 Female | 304 | 423.62 | 24.40 |  | 347 | 426.31 | 26.54 |  |
High school origin | ||||||||
 Java Bali | 389 | 420.68 | 25.46 | ANOVA test, F(3,442) = 1.582, p = 0.193, η2 = 0.011 | 452 | 422.48 | 26.90 | ANOVA test, F(3,504) = 0.318, p = 0.812, η2 = 0.002 |
 Sumatera | 34 | 411.44 | 30.67 |  | 30 | 425.83 | 25.98 |  |
 Kalimantan–Sulawesi | 13 | 414.92 | 24.29 |  | 12 | 423.00 | 23.67 |  |
 Overseas | 10 | 424.00 | 22.85 |  | 14 | 417.57 | 18.53 |  |
Father educational background | ||||||||
 Elementary school – high school | 28 | 413.96 | 35.01 | ANOVA test, F(2,443) = 0.789, p = 0.455, η2 = 0.004 | 33 | 416.21 | 21.71 | ANOVA test, F(2,505) = 1.534, p = 0.217, η2 = 0.006 |
 Vocational - Bachelor | 206 | 420.43 | 24.86 |  | 230 | 421.70 | 26.50 |  |
 Masters - Doctoral | 212 | 420.14 | 25.46 |  | 245 | 424.20 | 27.10 |  |
Mother educational background | ||||||||
 Elementary school – high school | 47 | 415.04 | 27.44 | ANOVA test, F(2,443) = 1, p = 0.369, η2 = 0.005 | 54 | 415.20 | 25.16 | ANOVA test, F(2,505) = 2.333, p = 0.098, η2 = 0.009 |
 Vocational - Bachelor | 265 | 420.09 | 26.22 |  | 296 | 423.33 | 27.26 |  |
 Masters - Doctoral | 134 | 421.18 | 24.53 |  | 158 | 423.61 | 25.39 |  |
Ethnicity | ||||||||
 Indonesian | 169 | 423.17 | 24.55 | ANOVA test, F(5,440) = 2.147, p = 0.059, η2 = 0.024 | 197 | 423.79 | 24.56 | ANOVA test, F(5,502) = 1.321, p = 0.254, η2 = 0.013 |
 Javanese | 130 | 417.80 | 23.38 |  | 136 | 423.15 | 27.26 |  |
 Sumatran | 52 | 411.58 | 28.35 |  | 59 | 416.97 | 29.89 |  |
 Chinese | 35 | 423.43 | 30.70 |  | 39 | 425.72 | 26.00 |  |
 Other | 33 | 417.27 | 28.01 |  | 42 | 416.50 | 29.96 |  |
 Mixed ethnicity | 27 | 423.93 | 28.13 |  | 35 | 426.40 | 24.09 |  |