Table 2.

Prediction results of validation samples derived from the initial and refined regression models.

Sample	Group	Observed	Predic_	Error_	Predict_	Error_	Predict_	Error_	Predict_	Error_
			initial_	initial_	refined_	refined_	initial_	initial_	refined_	refined_
			liver*	liver*	liver*	liver*	brain*	brain*	brain*	brain*
V1	D	5	5.6	0.6	5.995	0.995	5.215	0.215	5.037	0.037
V2	D	5	6.01	1.01	6.246	1.246	5.357	0.357	5.216	0.216
V3	D	7	6.266	−0.734	6.257	−0.743	6.689	−0.311	6.737	−0.263
V4	D	7	6.755	−0.246	7.051	0.051	6.853	−0.147	6.997	−0.003
V5	D	10	10.223	0.223	10.09	0.09	10.8	0.8	10.873	0.873
V6	D	10	11.025	1.025	11.024	1.024	9.957	−0.043	9.876	−0.124
V7	D	14	12.251	−1.749	12.846	−1.154	12.488	−1.512	12.955	−1.045
V8	D	14	11.762	−2.238	11.433	−2.567	12.06	−1.94	12.545	−1.455
V9	PS	5	7.11	2.11	7.345	2.345	5.426	0.426	5.307	0.307
V10	PS	5	6.545	1.545	6.677	1.677	5.278	0.278	5.009	0.009
V11	PS	7	8.428	1.428	8.486	1.486	9.687	2.687	9.461	2.461
V12	PS	7	8.614	1.614	9.171	2.171	9.338	2.338	9.404	2.404
V13	PS	10	11.163	1.163	11.574	1.574	11.213	1.213	11.364	1.364
V14	PS	10	11.4	1.4	12.039	2.039	11.511	1.511	11.92	1.92
V15	PS	14	12.578	−1.422	13.463	−0.537	11.351	−2.649	11.327	−2.673
V16	PS	14	12.843	−1.157	13.187	−0.813	13.193	−0.807	13.336	−0.664

^*Predict_initial and Error_initial: Prediction results of validation samples derived from the regression model based on all ASVs. Predict refined and Error refined: Prediction results of validation samples derived from the regression model established by selected taxa (liver 18 ASVs; brain 26 ASVs). PMSI was measured in units of days.