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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Bioorg Med Chem. 2008 Jul 29;16(17):8042–8053. doi: 10.1016/j.bmc.2008.07.070

Table 4.

QSAR Model Validation and Predictivity

Model LOO Cross q2 / SEP Group Cross q2 / SEP Bootstrapped r2 Bootstrapped SEE Non-Validated r2 / SEE Test Set r2 / SEE
1 .166 / 1.009 .162 / 1.012 .414 ± .079 .886 ± .393 .294 / .928 .118 / .831
2 .139 / 1.030 .130 / 1.036 .471 ± .047 .799 ± .326 .355 / .842 .293 / .750
3 .286 / .935 .279 / .930 .741 ± .041 .564 ± .279 .650 / .655 .769 / .456
4 .235 / .968 .236 / .974 .683 ± .050 .642 ± .340 .580 / .717 .648 / .591
5 .167 / 1.014 .187 / 1.001 .523 ± .044 .728 ± .298 .425 / .842 .567 / .611
6 .153 / 1.022 .127 / 1.038 .557 ± .044 .718 ± .301 .451 / .823 .417 / .613
7 .240 / .964 .215 / 1.004 .690 ± .030 .637 ± .313 .588 / .710 .786 / .497
8 .205 / .981 .203 / .982 .563 ± .071 .679 ± .285 .451 / .816 .441 / .667

9 .326 / .908 .320 / .913 .683 ± .059 .636 ± .227 .558 / .735 .528 / .746
10 .264 / .954 .238 / .971 .705 ± .065 .594 ± .293 .588 / .714 .697 / .556
11 .265 / .949 .261 / .951 .645 ± .043 .640 ± .232 .559 / .735 .609 / .601
12 .311 / .918 .314 / .916 .690 ± .034 .581 ± .204 .633 / .670 .737 / .498
13 .304 / .923 .295 / .929 .632 ± .030 .674 ± .202 .552 / .740 .514 / .781
14 .296 / .928 .305 / .922 .594 ± .048 .705 ± .242 .486 / .793 .525 / .757
15 .284 / .941 .288 / .938 .742 ± .034 .549 ± .240 .636 / .671 .717 / .533
16 .308 / .925 .326 / .913 .680 ± .045 .622 ± .242 .578 / .723 .419 / .836
17 .402 / .855 .358 / .887 .627 ± .051 .674 ± .278 .601 / .698 .559 / .618

18 .448 / .732 .420 / .750 .794 ± .023 .447 ± .175 .725 / .516 .756 / .474
19 .530 / .664 .537 / .660 .923 ± .016 .251 ± .097 .856 / .368 .781 / .561
20 .559 / .643 .588 / .621 .919 ± .015 .265 ± .116 .884 / .330 .734 / .612
21 .581 / .631 .600 / .616 .926 ± .020 .250 ± .116 .896 / .315 .754 / .584
22 .573 / .668 .589 / .607 .768 ± .041 .465 ± .149 .708 / .512 .781 / .493

23 .585 / .625 .587 / .623 .903 ± .024 .305 ± .127 .845 / .381 .769 / .524