Table 3. Persistence Task Analyses and Descriptive Statistics.

Persistence task analysis (mean ± SD)	CCI-ION		Naïve
Total time (s)–baseline	433.90 ± 130.52		508.68 ± 83.19
Total time (s)–trial	445.50 ± 110.93		449.68 ± 99.37
Total lever presses–baseline	44.35 ± 8.38		54.14 ± 16.19
Total lever presses–trial	41.00 ± 14.13		39.18 ± 13.69
	df	F value	P value
Total presses
t test
CCI-ION (baseline vs trial)	9	0.63	.55 (ns)
Naïve (baseline vs trial)	10	2.64	< .05*
Two-way ANOVA
Group	1,19	0.82	.38 (ns)
Trial/Time	1,19	5.47	< .05*
Interaction (Group × Time)	1,19	2.20	.16 (ns)
Time persisted
t test
CCI-ION (baseline vs trial)	9	−0.26	.80 (ns)
Naïve (baseline vs trial)	10	1.37	.20 (ns)
Two-way ANOVA
Group	1,19	1.28	.27 (ns)
Trial/Time	1,19	0.59	.45 (ns)
Interaction (Group × Time)	1,19	1.30	.27 (ns)

^*Significant at P < .05.

^**Significant at P < .01.

^***Significant at P < .001.

CCI-ION = chronic constriction injury of the infraorbital nerve: n = 21 (11 naïve, 10 CCI-ION); ANOVA = analysis of variance; ns = not significant.