Clinical effect of botulinum toxin type A combined with autologous fat grafting in patients with nasolabial fold depression

Table 1 Comparison of the baseline data of the patients

Group	Sample size (n)	Age (years)	BMI (kg/m2)	Number of years of education (years)
Observation group	30	50.96 ± 3.58	23.14 ± 2.24	9.55 ± 1.20
Control group	30	50.91 ± 3.63	23.08 ± 2.28	9.60 ± 1.24
t		0.053	0.103	0.159
P value		> 0.05	> 0.05	> 0.05

BMI: Body mass index.