Table 2.

Spearman Partial Correlation Coefficients of Selected Dietary Intake with Microbial Diversity/Richness and with Relative Bacterial Abundance at Class and Family Levels

Dietary intake	Diversity/Richness*			Classes#								Families#
	PD_whole_ tree	Chao	observed_ otus	Shannon	Bacilli	Clostridia	Actinobacteria	Bacteroidia	Betaproteobacteria	Gammaproteobacteria	Fusobacteria	Streptococcaceae	Veillonellaceae	Prevotellaceae	Micrococcaceae	Pasteurellaceae	Neisseriaceae	Gemellaceae	Actinomycetaceae	Fusobacteriaceae	Carnobacteriaceae	Leptotrichiaceae	Porphyromonadaceae	Lactobacillaceae	Lachnospiraceae
(Mean)	(37.14)	(827.7)	(422.5)	(4.914)	(47.8%)	(13.4%)	(12.8%)	(12.3%)	(4.0%)	(3.9%)	(3.7%)	(40.5%)	(10.9%)	(9.4%)	(7.7%)	(3.9%)	(3.8%)	(3.7%)	(3.2%)	(1.9%)	(1.9%)	(1.9%)	(1.6%)	(1.3%)	(1.2%)
Calorie	0.072	0.029	0.023	0.070	−0.023	0.145	−0.042	0.083	−0.152	−0.038	−0.041	−0.091	0.108	0.119	−0.025	−0.025	−0.154	−0.041	−0.028	−0.020	−0.082	−0.039	−0.065	0.182	0.074
H_Eat Index	−0.054	−0.079	−0.070	−0.095	0.048	−0.073	0.005	−0.093	0.011	0.082	−0.079	0.110	−0.027	−0.072	0.108	0.065	0.012	−0.025	−0.100	−0.059	−0.001	−0.045	−0.047	−0.091	−0.095
PctSweet	−0.068	−0.013	−0.032	−0.032	0.043	0.075	−0.005	−0.010	−0.136	−0.098	−0.098	0.037	0.120	−0.034	0.003	−0.088	−0.135	−0.048	−0.056	−0.098	0.009	−0.102	−0.057	0.117	−0.146
Glycemic load	0.010	−0.021	−0.028	0.027	0.029	0.140	−0.011	0.031	−0.196	−0.037	−0.091	−0.021	0.134	0.066	0.018	−0.039	−0.193	−0.091	−0.054	−0.049	−0.081	−0.091	−0.086	0.205	0.019
Sodium	0.018	−0.005	0.005	0.003	0.014	−0.156	0.005	−0.011	0.077	0.142	0.028	−0.014	−0.151	−0.006	0.062	0.136	0.076	0.117	−0.077	0.080	0.018	0.025	0.045	0.000	−0.020
Fiber	0.032	0.000	0.019	−0.022	−0.008	−0.096	−0.066	−0.021	0.117	0.093	−0.009	0.022	−0.108	−0.022	0.017	0.099	0.110	0.059	−0.054	−0.019	0.048	0.028	0.005	−0.152	−0.034
SFA	0.141	0.166	0.156	0.169	−0.099	−0.043	−0.056	0.098	0.202	0.077	0.141	−0.170	−0.086	0.044	−0.132	0.085	0.196	0.152	0.060	0.098	0.052	0.150	0.140	−0.006	0.088
n3PUFA	0.063	0.025	0.033	0.071	−0.080	−0.028	−0.038	0.024	0.048	−0.018	0.138	−0.098	−0.114	0.010	−0.108	−0.038	0.042	0.071	0.083	0.077	−0.065	0.161	0.050	0.019	0.202
n6PUFA	0.063	0.029	0.040	0.072	−0.054	0.066	−0.029	0.031	−0.017	−0.025	0.100	−0.090	−0.005	0.043	−0.101	−0.040	−0.026	0.009	0.100	0.113	−0.044	0.058	0.006	0.061	0.217
Carotene	0.068	0.060	0.084	0.080	−0.029	−0.108	−0.061	−0.087	0.122	0.108	0.004	−0.030	−0.099	−0.095	0.000	0.127	0.108	0.015	−0.080	0.004	0.050	0.018	−0.022	−0.090	−0.077
Quercetin	0.024	0.037	0.037	0.025	−0.021	−0.035	−0.049	−0.014	0.062	0.099	−0.046	−0.016	−0.040	0.001	0.035	0.107	0.063	0.057	−0.046	−0.005	0.171	−0.060	−0.063	−0.114	−0.111
Iron	0.017	0.007	0.017	0.027	0.064	−0.011	0.015	−0.065	0.061	0.058	0.068	0.053	−0.003	−0.041	0.060	0.068	0.057	0.091	−0.008	0.017	0.057	0.089	−0.013	−0.046	0.076
Zinc	0.089	0.080	0.089	0.095	−0.016	−0.002	−0.037	−0.029	0.102	0.039	0.130	−0.021	−0.028	−0.022	−0.022	0.066	0.097	0.094	−0.014	0.084	0.053	0.140	0.057	−0.060	0.119
Phosphorus	0.028	0.012	0.025	−0.029	−0.004	−0.050	−0.114	−0.001	0.094	0.074	−0.090	−0.037	−0.037	−0.001	−0.040	0.076	0.092	0.026	−0.124	−0.081	−0.049	−0.058	0.010	0.016	−0.071
Magnesium	0.025	0.004	0.012	0.008	−0.068	0.018	−0.026	−0.015	0.090	0.059	0.047	−0.050	−0.005	0.011	−0.011	0.084	0.089	0.022	0.033	0.004	0.030	0.054	−0.029	−0.103	0.095
Calcium	0.031	0.027	0.029	−0.019	−0.024	−0.089	−0.011	−0.048	0.133	0.118	0.042	−0.007	−0.065	−0.025	0.007	0.113	0.137	0.114	−0.003	0.014	0.019	0.064	−0.031	−0.140	0.017
Vitamin B1	0.107	0.101	0.108	0.142	−0.088	0.103	−0.082	0.085	0.072	0.069	0.173	−0.072	0.069	0.124	−0.085	0.081	0.068	0.087	0.058	0.106	0.002	0.164	0.025	−0.052	0.192
Vitamin B2	0.105	0.107	0.117	0.127	−0.052	0.057	−0.098	0.083	0.100	0.071	0.131	−0.061	0.028	0.107	−0.080	0.086	0.095	0.119	0.010	0.060	0.030	0.143	0.031	−0.051	0.150
Vitamin B6	0.092	0.060	0.081	0.127	−0.033	0.028	−0.087	0.031	0.111	0.079	0.154	−0.031	−0.017	0.056	−0.070	0.100	0.106	0.121	0.042	0.108	0.083	0.134	0.028	−0.086	0.165
Vitamin B12	0.100	0.092	0.109	0.124	−0.050	0.027	−0.077	0.046	0.126	0.065	0.143	−0.064	−0.012	0.059	−0.072	0.093	0.118	0.093	0.007	0.085	0.017	0.143	0.061	−0.038	0.148
Niacin	0.022	0.004	0.021	0.044	0.026	0.070	−0.108	−0.022	0.045	0.006	0.065	0.031	0.026	0.009	−0.096	0.026	0.035	0.071	0.011	0.037	0.000	0.047	−0.009	0.011	0.106
Folate	0.061	0.058	0.069	0.087	−0.037	0.054	−0.063	0.029	0.066	0.073	0.125	−0.038	0.036	0.061	−0.047	0.084	0.064	0.097	0.000	0.087	0.055	0.132	0.015	−0.077	0.129
Vitamin C	0.150	0.118	0.141	0.164	−0.164	0.089	−0.027	0.076	0.116	0.083	0.187	−0.109	0.048	0.096	−0.037	0.090	0.111	0.031	0.069	0.214	0.045	0.176	0.112	−0.146	0.251
Vitamin D	0.041	0.049	0.051	0.051	−0.003	0.031	−0.005	0.015	0.037	0.022	0.110	−0.034	0.028	0.041	−0.021	0.037	0.029	0.089	0.076	0.020	0.034	0.137	−0.030	−0.041	0.146
Vitamin E	0.069	0.043	0.065	0.119	−0.023	0.008	−0.037	−0.022	0.110	0.028	0.164	−0.043	−0.028	−0.024	−0.050	0.046	0.104	0.100	0.041	0.129	0.089	0.143	0.070	−0.084	0.160

^aBacteria groups are limited to those representing at least average 1% in the study subjects and the mean percentage (%) of each group is presented in the parentheses. Gray shaded cells: With white figures: postive correlation, dark p < 0.01, medium 0.01 ≤ p < 0.05, light 0.05 ≤ p < 0.10; with black figures: negative correlation, dark p < 0.01, medium 0.01 ≤ p < 0.05; light 0.05 ≤ p < 0.10.

^*Adjusted for experimental batch, #adjusted for experimental batch and age (≥65 vs < 65 years) of subjects.

H_Eat Index = Heathy Eating Index, PctSweet = percentage of calories from sweets and deserts, SFA = saturated fatty acids, PUFA = polyunsaturated fatty acids.