Table II.

Statistical dispersion of percentage withdrawal threshold (Right/Left Hind) differed from the naked-eye group to the microscope group.

Weeks after surgery	8		10		12		14		16
Group	N	M	N	M	N	M	N	M	N	M
Mean	75.35	78.65	74.67	77.09	75.67	77.17	76.53	77.31	76.26	75.45
95% CI of mean	69.20 to 81.50	75.75 to 81.54	68.93 to 80.41	73.98 to 80.21	71.43 to 79.92	74.46 to 79.88	73.28 to 79.79	75.35 to 79.28	73.63 to 78.89	73.50 to 77.39
Standard deviation	16.47	7.75	15.38	8.34	11.36	7.26	8.72	5.27	7.04	5.22
CV, %	21.86	9.86	20.60	10.82	15.01	9.41	11.39	6.82	9.23	6.92
95% CI of CV	17.06 to 26.65	7.69 to 12.02	16.08 to 25.12	8.45 to 13.20	11.72 to 18.31	7.34 to 11.47	8.89 to 13.89	5.33 to 8.32	7.21 to 11.25	5.40 to 8.43
Homogeneity of variance (F-test)	p < 0.001		p = 0.002		p = 0.019		p = 0.009		p = 0.113

CI, confidence interval; CV, coefficient of variation; M, microscope group; N, naked-eye group.