Table 2 The result of differences test of complete and impute data for RSES
From: The ability of different imputation methods for missing values in mental measurement questionnaires
variables | original | Missingness proportion of 5% | Missingness proportion of 10% | Missingness proportion of 15% | Missingness proportion of 20% | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HD | MI | HD | MI | HD | MI | HD | MI | ||||||||||||
Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | Mean (SD) | t / F value | ||
Gender | Male | 28.66 (4.57) | 5.92 | 28.69 (4.55) | 6.78 | 28.66 (5.51) | 5.94 | 28.71 (4.50) | 5.98 | 28.67 (5.48) | 5.94 | 28.69 (4.48) | 6.07 | 28.62 (5.44) | 5.74 | 28.62 (4.34) | 5.44 | 28.65 (5.39) | 5.79 |
Female | 27.74 (4.64) | 27.73 (4.63) | 27.73 (5.53) | 27.79 (4.63) | 27.74 (5.49) | 27.76 (4.59) | 27.72 (5.43) | 27.80 (4.52) | 27.73 (5.34) | ||||||||||
Grade | Junior | 28.30 (4.57) | 1.46* | 28.31 (4.56) | 1.45* | 28.29 (5.66) | 1.07* | 28.36 (4.52) | 1.83* | 28.30 (5.71) | 1.06* | 28.33 (4.48) | 1.65* | 28.27 (5.75) | 1.01* | 28.30 (4.42) | 1.34* | 28.28 (5.84) | 1.01* |
Senior | 28.06 (4.74) | 28.07 (4.73) | 28.04 (8.11) | 28.07 (4.70) | 28.05 (8.07) | 28.06 (4.69) | 28.03 (8.18) | 28.08 (4.65) | 28.04 (8.12) | ||||||||||
Record | Excellent | 31.09 (4.74) | 63.53 | 31.12 (4.77) | 58.28 | 31.06 (5.89) | 32.24 | 31.07 (4.79) | 61.51 | 31.04 (5.92) | 30.01 | 31.05 (4.76) | 60.70 | 30.97 (5.90) | 28.13 | 30.96 (4.80) | 54.56 | 31.00 (5.93) | 27.18 |
Good | 29.46 (4.46) | 29.41 (4.46) | 29.43 (5.62) | 29.45 (4.41) | 29.45 (5.58) | 29.42 (4.46) | 29.38 (5.62) | 29.27 (4.35) | 29.35 (5.54) | ||||||||||
Average | 28.13 (4.38) | 28.14 (4.37) | 28.12 (5.57) | 28.18 (4.34) | 28.12 (5.55) | 28.13 (4.30) | 28.08 (5.51) | 28.15 (4.26) | 28.10 (5.47) | ||||||||||
Poor | 26.46 (4.38) | 26.53 (4.63) | 26.49 (5.78) | 26.56 (4.59) | 26.53 (5.72) | 26.58 (4.55) | 26.55 (5.69) | 26.66 (4.55) | 26.59 (5.70) | ||||||||||
Residence | Urban | 28.57 (4.86) | 0.46* | 28.58 (4.98) | 0.29* | 28.59 (6.07) | 0.64* | 28.56 (4.91) | 0.25* | 28.54 (6.01) | 0.41* | 28.75 (4.86) | 0.74* | 28.54 (5.96) | 0.51* | 28.71 (4.77) | 0.67* | 28.65 (5.85) | 0.50* |
Rural | 28.21 (4.62) | 28.22 (4.60) | 28.20 (5.87) | 28.25 (4.57) | 28.21 (5.83) | 28.22 (4.54) | 28.18 (5.78) | 28.21 (4.49) | 28.19 (5.72) | ||||||||||
Communication | Usually | 28.87 (4.55) | 32.29 | 28.86 (4.55) | 29.15 | 28.86 (5.71) | 8.63 | 28.90 (4.49) | 31.29 | 28.87 (5.68) | 8.11 | 28.86 (4.47) | 30.47 | 28.83 (5.64) | 8.18 | 28.85 (4.42) | 30.57 | 28.86 (5.57) | 8.15 |
Sometimes | 27.83 (4.34) | 27.85 (4.33) | 27.82 (5.49) | 27.90 (4.35) | 27.83 (5.50) | 27.87 (4.31) | 27.80 (5.44) | 27.85 (4.26) | 27.80 (5.39) | ||||||||||
Scarcely | 26.23 (5.23) | 26.33 (5.18) | 26.28 (6.42) | 26.31 (5.04) | 26.26 (6.27) | 26.39 (5.10) | 26.26 (6.30) | 26.38 (4.94) | 26.31 (6.27) | ||||||||||
Never | 25.68 (4.75) | 25.63 (4.84) | 25.66 (6.20) | 25.81 (4.78) | 25.79 (6.11) | 25.81 (4.63) | 25.78 (5.96) | 25.74 (4.67) | 25.72 (5.99) | ||||||||||
Unclear | 26.45 (4.94) | 26.45 (4.92) | 26.45 (6.29) | 26.45 (5.02) | 26.44 (6.34) | 26.26 (4.99) | 26.31 (6.30) | 26.55 (4.82) | 26.35 (6.23) | ||||||||||