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. Author manuscript; available in PMC: 2008 Jan 15.
Published in final edited form as: Free Radic Biol Med. 2006 Oct 20;42(2):280–287. doi: 10.1016/j.freeradbiomed.2006.10.044

Table 3.

Test performance characteristics of the SOD, GPX activities, and the relative ratio of the GPX/SOD activity

Variable Time N Sensitivity (%) Specificity (%) Overall error (%) P-value*
SOD Pre 14 85.7 71.4 21.4 0.0038
Week 1 15 87.5 85.7 13.4 0.0026
Week 2 15 75.0 71.4 26.8 0.0155
Week 3 15 87.5 85.7 13.4 0.0226
Week 4 15 87.5 71.4 20.1 0.1705
Week 5 14 100.0 71.4 14.3 0.0051
Week 6 11 83.3 80.0 18.3 0.0148
GPX Pre 14 71.4 71.4 28.6 0.0360
Week 1 15 87.5 71.4 20.5 0.0028
Week 2 15 87.5 71.4 20.5 0.0028
Week 3 15 87.5 85.7 13.4 0.0025
Week 4 15 87.5 57.1 27.7 0.0284
Week 5 14 85.7 71.4 21.4 0.0136
Week 6 11 83.3 60.0 28.3 0.0507
GPX/SOD Pre 14 85.7 71.4 21.4 0.0046
Week 1 15 100.0 100.0 0.0 0.0009
Week 2 15 100.0 71.4 14.3 0.0058
Week 3 15 87.5 85.7 13.4 0.0018
Week 4 15 87.5 71.4 20.5 0.0233
Week 5 14 85.7 71.4 21.4 0.0058
Week 6 11 83.3 80.0 18.3 0.0098
*

P-values were obtained by F-statistics based on the Wilk’s Lambda.