Fig. 1

a) Box and whisker plot showing the total score distribution between the two schools (Imperial: n = 211, Median (M) = 30, Interquartile Range (IQR) = 10; NTU: n = 141, M = 32, IQR = 7). “X” represents mean (Imperial = 31.5; NTU = 32.0). No significant differences identified between schools when Mann–Whitney U test applied). b) Bar chart showing M ± IQR. Subscale 1 scores (Imperial: n = 211, 11.5 ± 4.25; NTU: n = 141, 13 ± 5). Error bars represent IQR. Significant difference identified when Mann–Whitney U test applied (p = 0.003). c) Bar chart showing M ± IQR. Subscale 2 scores (Imperial: n = 211, 12 ± 4; NTU: n = 141, 12 ± 4). Error bars represent IQR. No significant difference identified when Mann–Whitney test applied. d) Bar chart showing M ± IQR. Subscale 3 scores (Imperial: n = 211, 7 ± 4; NTU: n = 141, 8 ± 3). Error bars represent IQR. Significant difference identified when Mann–Whitney U test applied (p < 0.00001)