TABLE 2.

α-diversity comparisons: HNC vs. HC and HNC HPV+ vs. HPV–.

Variablea	Minb	Maxc	Meand	Std Deve	p-valuef
Grp-All HNC vs. HC
BPST
HNC	42	247	131.65	39.738	0.045
HC	53	281	143.5	42.448
BST
HNC	42	224	127.87	36.689	0.004
HC	72	281	145.96	41.343
BPS
HNC	45	247	138.28	42.348	0.378
HC	53	581	143.91	44.884
PST
HNC	42	267	135.09	42.93	0.027
HC	53	223	146.37	38.401
Grp-noAB HNC vs. HC
BPST
HNC	45	247	131.17	38.434	0.056
HC	53	281	143.5	42448
BST
HNC	45	224	139.91	33.5	0.017
HC	72	281	145.96	41.343
BPS
HNC	45	247	139.55	41.855	0.54
HC	53	281	14.91	44.884
PST
HNC	69	267	136.13	42.264	0.045
HC	53	223	146.38	38.401
Grp-All HPV+ vs. HPV−
BPST
Negative	42	218	127.25	37.99	0.413
Positive	45	247	133.47	39.39
BST
Negative	42	218	119.67	40.014	0.063
Positive	45	214	134.20	34.948
PST
Negative	42	218	130.52	40.964	0.483
Positive	69	267	140.30	43.242
Grp-noAB HPV+ vs. HPV−
BPST
Negative	86	177	128.83	28.197	0.919
Positive	45	247	130.17	40.511
BST
Negative	86	174	128.08	28.273	0.787
Positive	45	214	130.71	34.437
PST
Negative	86	177	133.67	30.332	0.921
Positive	69	267	137.29	45.687

^aSample comparisons from head and neck cancer (HNC) patients with or without human papillomavirus (HPV) and healthy controls (HC) for sample sites buccal (B), plaque (P), saliva (S), and tongue (T) with and without (noAB) antibiotic treatment.

^bMinimum number of species detected per sample.

^cMaximum number of species detected per sample.

^dMean number of species detected per sample.

^eStandard deviation of species detected per sample.

^fMann–Whitney U-test p-value.

Significant values (p > 0.05) are shown in bold. Positive, HPV positive; Negative, HPV negative.