| Learning sheets 1 st / 2 nd evaluation |  | Overall improvement | |||||
---|---|---|---|---|---|---|---|---|
 | Mean (SD) | Slope †| Multivariate regression | |||||
Experiment | 1 | 2 | 3 | 4 | 5 | Â | 95% CI | p |
Dimension | ||||||||
 Clarity | 1.64(1.07)/3.07(0.78)* | 1.94(1.13)/2.66(0.48)* | 3.06(0.88)/3.91(0.71)* | 3.81(0.59)/2.91(0.30)* | 2.44(0.84)/2.91(0.30)* | 0.410 | 0.45–1.07 | 0.0012 |
 Accuracy | 0.47(0.79)/1.77(1.25)* | 1.03(1.12)/2.25(1.08)* | 2.03(1.03)/3.78(0.72)* | 3.06(1.32)/2.53(0.42)* | 1.75(0.80)/2.07(0.51)* | 0.348 | 1.35–3.43 | 0.0995 |
 Precision | 1.21(1.01)/2.53(0.97)* | 2.03(0.86)/2.66(0.70)* | 2.25(0.62)/3.91(0.83)* | 2.91(0.78)/3.90(0.30)* | 2.53(0.51)/3.00(0.08)* | 0.296 | 0.30–0.64 | 0.0659 |
 Relevance | 1.85(1.23)/2.47(1.20)* | 2.03(0.69)/2.78(0.42)* | 2.19(1.00)/ 3.91(0.70)* | 3.38(1.26)/3.91(0.30)* | 2.13(0.79)/2.50(0.72)* | 0.172 | 0.69–1.93 | 0.0007 |
 Depth | 0.26(0.75)/1.77(1.25)* | 0.41(0.71)/1.69(1.09)* | 0.81(0.64)/3.25(1.29)* | 1.88(1.34)/2.19(0.62)* | 0.94(0.56)/2.37(0.78)* | 0.472 | 1.28–2.55 | 0.5733 |
 Breadth | 0.32(0.77)/1.37(1.27)* | 0.46(0.72)/1.41(0.80)* | 0.59(0.72)/2.13(1.07)* | 0.94(0.76)/1.50(1.04)* | 0.56(0.50)/1.50(0.98)* | 0.360 | 0.45–1.03 | 0.6305 |
 Logic | 0.26(0.75)/1.77(1.25)* | 0.75(0.95)/2.25(0.95)* | 1.47(0.67)/3.66(0.78)* | 2.94(1.13)/2.88(0.48)* | 1.94(0.80)/2.88(0.34)* | 0.455 | 0.29–0.64 | < 0.0001 |
 Significance | 0.26(0.75)/1.77(1.25)* | 0.53(0.72)/1.93(0.71)* | 0.97(0.62)/2.91(0.83)* | 1.25(1.05)/2.91(0.93)* | 0.69(0.47)/2.22(0.67)* | 0.399 | 0.83–1.54 | 0.5859 |
 Fairness | 0.38(0.78)/1.77(1.25)* | 0.66(0.87)/2.00(1.11)* | 0.78(0.66)/3.06(0.88)* | 1.38(1.18)/2.19(1.19)* | 0.69(0.47)/2.37(0.78)* | 0.417 | 0.58–1.35 | 0.4342 |