| Items | Mean | Min | Max | SD | Kurtosis | Skewness |
| DK1 | 3.973 | 1 | 5 | 0.845 | 0.172 | −0.640 |
| DK2 | 4.062 | 1 | 5 | 0.827 | 0.722 | −0.854 |
| DK3 | 4.254 | 1 | 5 | 0.772 | 0.467 | −0.853 |
| WK1 | 4.125 | 1 | 5 | 0.817 | 0.524 | −0.801 |
| WK2 | 4.071 | 1 | 5 | 0.858 | 0.496 | −0.819 |
| WK3 | 4.094 | 1 | 5 | 0.796 | 0.328 | −0.702 |
| IN1 | 2.893 | 1 | 5 | 1.385 | −1.281 | 0.046 |
| IN2 | 3.768 | 1 | 5 | 0.896 | 0.814 | −0.758 |
| IN3 | 2.509 | 1 | 5 | 1.313 | −0.972 | 0.438 |
| IN4 | 3.978 | 1 | 5 | 0.759 | 0.152 | −0.455 |
| IN5 | 3.984 | 1 | 5 | 0.852 | 0.483 | −0.710 |
| IN6 | 4.020 | 1 | 5 | 0.841 | 0.478 | −0.693 |
| IP1 | 3.902 | 1 | 5 | 0.866 | 0.312 | −0.596 |
| IP2 | 3.871 | 1 | 5 | 0.914 | 0.170 | −0.638 |
| IP3 | 3.757 | 1 | 5 | 0.948 | −0.503 | −0.412 |
| IP4 | 3.685 | 1 | 5 | 0.978 | −0.177 | −0.542 |
| IP5 | 3.940 | 1 | 5 | 0.801 | 0.696 | −0.675 |
| IP6 | 3.839 | 1 | 5 | 0.887 | 0.058 | −0.566 |
| IP7 | 3.915 | 1 | 5 | 0.867 | 0.536 | −0.722 |
| RD1 | 3.574 | 1 | 5 | 0.986 | −0.555 | −0.283 |
| RD2 | 3.442 | 1 | 5 | 1.090 | −0.781 | −0.229 |
| RD3 | 2.900 | 1 | 5 | 1.144 | −0.853 | 0.171 |
| RD4 | 4.136 | 1 | 5 | 0.851 | 0.834 | −0.961 |
| RD5 | 4.163 | 1 | 5 | 0.867 | 0.843 | −1.022 |
| WC1 | 4.205 | 1 | 5 | 0.696 | 1.256 | −0.781 |
| WC2 | 3.958 | 2 | 5 | 0.813 | −0.466 | −0.372 |
| WC3 | 3.656 | 1 | 5 | 0.967 | −0.518 | −0.351 |
| WC4 | 3.906 | 1 | 5 | 0.879 | 0.061 | −0.608 |
| WC5 | 3.984 | 1 | 5 | 0.934 | 0.010 | −0.727 |
| WC6 | 3.853 | 1 | 5 | 0.989 | 0.087 | −0.743 |
| WM1 | 4.114 | 1 | 5 | 0.792 | 0.803 | −0.773 |
| WM2 | 3.844 | 1 | 5 | 0.979 | −0.115 | −0.643 |
| WM3 | 4.058 | 1 | 5 | 0.819 | 0.296 | −0.719 |
| WM4 | 4.071 | 1 | 5 | 0.850 | 1.268 | −0.968 |
| WM5 | 4.228 | 1 | 5 | 0.806 | 1.078 | −1.028 |