表 2.

30次牙体预备预测分数与合格标准分数的比较

Comparison between the qualified standard score and the predicted scores of 30 tooth preparations

Trial times	Predicted score, M (P25, P75)	P value
*P=0.049 9.
1	62.50 (57.44, 69.83)	0.002
2	70.56 (66.97, 73.44)	0.005
3	73.20 (70.52, 77.13)	0.005
4	75.40 (72.14, 81.44)	0.028
5	76.21 (73.59, 83.04)	0.136
6	76.86 (74.80, 84.01)	0.583
7	77.40 (75.83, 85.57)	0.583
8	77.88 (76.60, 86.81)	0.433
9	78.65 (77.31, 87.91)	0.388
10	79.35 (77.98, 88.91)	0.388
11	79.99 (78.54, 89.82)	0.347
12	80.58 (78.94, 90.65)	0.182
13	81.12 (79.35, 91.42)	0.158
14	81.62 (79.78, 92.14)	< 0.050*
15	82.09 (80.18, 92.81)	0.019
16	82.59 (80.55, 93.44)	0.012
17	83.08 (80.91, 94.04)	0.008
18	83.55 (81.23, 94.61)	0.005
19	83.99 (81.54, 95.14)	0.004
20	84.42 (81.82, 95.66)	0.004
21	84.82 (82.07, 96.15)	0.003
22	85.21 (82.31, 96.62)	0.003
23	85.55 (82.53, 97.16)	0.002
24	85.76 (82.72, 97.20)	0.002
25	85.96 (82.93, 97.23)	0.002
26	86.16 (83.12, 97.26)	0.002
27	86.34 (83.30, 97.29)	0.002
28	86.52 (83.48, 97.34)	0.002
29	86.69 (83.65, 97.43)	0.002
30	86.86 (83.81, 97.51)	0.002