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. 2021 Aug 23;16(8):e0256445. doi: 10.1371/journal.pone.0256445

Table 3. Prognosis of clinical outcomes by relative abundance of Gsp07 or G. swidsinskii/G. leopoldii, and LbRC5 scores at intervals from initiation of metronidazole therapy.

Analysis Days V1 d7 d7 d7 d10 d10 V2 V2
Group vs Group Ref& Rec Ref& Rec Ref Ref Ref Ref Rec Rec
Rem Rem Rec& Rem Rec& Rem Rec& Rem Rec& Rem Rem Rem
Target Gsp07 Gsp07 Gsp07 Gswi/Gleo Gsp07 Gswi/ Gleo AllGv LbRC5
ROC AUC 0.778 0.700 0.893 0.763 0.860 0.716 0.786 0.839
95% CI 0.600 0.547 0.802 0.610 0.738 0.537 0.517 0.621
0.956 0.852 0.984 0.916 0.981 0.895 1.055 1.057
P 0.012 0.049 <0.0001 0.003 0.0004 0.034 0.064 0.028
Optimal TH -3.03 -2.05 -2.19 -2.00 -1.68 -1.14 -0.34 4.99
Fisher’s exact PPV 0.955 0.944 0.778 0.571 0.818 0.625 0.86 0.78
95% CI 0.772 0.727 0.524 0.372 0.482 0.354 0.42 0.40
0.999 0.999 0.936 0.755 0.977 0.848 1.00 0.97
NPV 0.381 0.385 0.846 0.875 0.84 0.85 0.88 0.86
95% CI 0.118 0.202 0.651 0.617 0.639 0.621 0.47 0.42
0.616 0.594 0.956 0.984 0.955 0.968 1.00 1.00
OR 12.9 10.6 19.3 9.33 23.6 9.44 42 21
95% CI 1.4 1.22 4.13 1.77 3.65 1.92 2.1 1.5
116.0 92.7 89.8 49.1 153 46.4 826 293
P 0.009 0.016 < 0.0001 0.005 0.0003 0.005 0.010 0.041

Log% abundance of each species and sums of species and of the LbRC5 scores at the indicated days were initially analyzed with ROC curves. All indicated comparison pairs were analyzed for each of these targets, only those with significant P scores are shown. The optimal threshold values (TH) were determined from the likelihood ratios and used to group individual scores as positive or negative for analysis with Fisher’s exact tests. Positive predictive values (PPV) and negative predictive values (NPV) above 0.75 are emphasized in bold. AUC = area under the ROC curve, approximately the test accuracy. CI = confidence interval. AllGv = log% of sums of all 5 species.