Impact of early refined nursing program on prognosis of middle-aged and elderly patients with cognitive dysfunction combined with cerebral infarction

Table 3 Changes in the latency and amplitude of P300, mean ± SD

Group	Latency (ms)			Amplitude (μv)
	0 wk	6 wk	12 wk	0 wk	6 wk	12 wk
Experimental group (n = 32)	452.38 ± 40.52	402.31 ± 21.14a,b	365 ± 15.13a,b	4.53 ± 2.14	6.18 ± 1.74a,b	6.89 ± 1.45a,b
Control group (n = 28)	467.84 ± 43.99	437.79 ± 22.57b	384.23 ± 16.46b	4.41 ± 2.08	5.22 ± 1.93b	6.02 ± 1.66b
Inter-group comparison (F/P value)	30.340/< 0.001			5.556/0.019
Time comparison (F/P value)	136.700/< 0.001			17.600/< 0.001
Inter-group time interactive comparison (F/P value)	2.179/0.116			0.932/0.395

^aP < 0.05 compared with control group.

^bP < 0.05 compared with 0 wk.