TABLE 3.

TNEG and TPOS groups and their frequencies

Isolates	Group sizea (X)	Frequencyb (Y)	No. of isolatesc (X · Y)	%d
TNEG	1	51	51	27.0
	2	32	64	33.9
	3	8	24	12.7
	4	2	8	4.2
	5	3	15	7.9
	6	2	12	6.3
	7	1	7	3.7
	8	1	8	4.2
Total		100	189	100
TPOS	1	11	11	4.5
	2	15	30	12.2
	3	3	9	3.7
	4	3	12	4.9
	5	2	10	4.1
	6	1	6	2.4
	8	1	8	3.3
	9	1	9	3.7
	10	1	10	4.1
	11	1	11	4.5
	12	1	12	4.9
	20	1	20	8.2
	23	1	23	9.4
	74	1	74	30.2
Total		43	245	100

^aNumber of isolates in a single PFGE group.

^bFrequency of group size occurrence.

^cNumber of isolates in respective group size.

^dPercentage of the total number of isolates for the corresponding group size.