Table 1.

Relationship between the number of AMG and PMG during stage 11

	# of AMG	n	AMG/segment	P-value
Total AMG	257	48	5.4 ± 1.4	--
AMG from same segment
2 PMG	57	11	5.2 ± 1.1	0.71
3 PMG	91	18	5.1 ± 1.3	0.45
4 PMG	72	12	6.0 ± 1.9	0.29
> 4 PMG	37	7	5.3 ± 1.4	0.97
AMG from next posterior segment
2 PMG	45	8	5.6 ± 1.2	0.62
3 PMG	56	12	4.7 ± 1.0	0.13
4 PMG	40	8	5.0 ± 1.7	0.53
> 4 PMG	25	4	6.3 ± 1.7	0.25

The top row (Total AMG) indicates the total number of AMG and mean AMG/segment counted from 48 segments (n). AMG from same segment – the number of AMG were counted in 48 segments that contained varying numbers of PMG. For each group differing in PMG number, the mean, standard deviation, and P-value were calculated for the number of AMG present in the same segments. AMG from next posterior segment – 32 segments had an adjacent posterior segment. For each group differing in PMG number, the mean, standard deviation, and P-value were calculated for the number of AMG present in the next posterior segments. The Student’s t-test with a 2-tailed distribution was used to compare the mean AMG/segment between each experimental class and the total mean AMG. None of the experimental values differed significantly from the total AMG mean.