TABLE 4.

Percentages of the four genotypes of F-specific RNA phages in human and animal samples

Tracera	No. of samples	% Positive samples	% of tracer in samples					P valueb
			Minimum	Maximum	Mean	SD	Median
FRNAPH I-H	103	89.3	0	22	5.02	5.16	4.00	<0.001
FRNAPH I-A	82	95.1	0	98	35.19	30.90	28.30
FRNAPH II-H	103	99.0	0	100	49.56	28.35	46.90	<0.001
FRNAPH II-A	82	65.8	0	69	7.61	11.78	3.85
FRNAPH III-H	103	96.1	0	100	40.23	26.28	38.00	0.072
FRNAPH III-A	82	87.8	0	98	32.23	33.87	16.00
FRNAPH IV-H	103	65.0	0	34	5.18	6.68	2.10	<0.001
FRNAPH IV-A	82	90.2	0	99	24.94	27.82	14.80

^aLabels of tracers are shown in the list of variables in Table 2. H, samples of human origin; A, samples of animal origin.

^bValue of P from Student's t test.