Impact of transcranial electrical stimulation on serum neurotrophic factors and language function in patients with speech disorders

Table 2 Comparison of development levels between the two groups before and after intervention (mean ± SD, point)

	Control group (n = 40)		Observation group (n = 41)
	Before the intervention	After the intervention	Before the intervention	After the intervention
Language ability	66.78 ± 5.81	71.83 ± 6.22a	67.01 ± 5.77	79.54 ± 5.69a,b
Functional ability	78.23 ± 5.75	81.34 ± 6.22a	78.17 ± 5.82	85.34 ± 6.11a,b
Human ability	77.13 ± 6.09	80.54 ± 7.11a	76.94 ± 6.13	84.02 ± 6.51a,b
Motor ability	77.25 ± 5.83	80.57 ± 6.94a	77.02 ± 5.93	82.96 ± 5.31a,b
Developmental quotient	58.69 ± 6.34	75.77 ± 7.49a	58.81 ± 6.27	85.64 ± 2.11a,b

^aP < 0.05, comparison before and after intervention in the group.

^bP > 0.05, compared between groups after intervention.