Table 1.

The patients’ characteristics and demographics

Characteristic	Value
Maternal age (years)	32.84 ± 4.37
Gravidity (times)	4.49 ± 1.41
Prior abortion (times)	2.00 (0.00–6.00)a
Prior CS (times)	1.00 (1.00–2.00)a
Interval between CS and CSP (months)	71.44 ± 46.17
Gestational age (days)	83.18 ± 28.14
Interval between D&C and hysteroscopic surgery (days)	22.33 ± 13.08
Serum β-hCG level before hysteroscopic surgery (IU/L)	2623.00 (0.55–39,992.00)a
Size of the residual gestational tissue before hysteroscopic surgery (cm)	3.44 ± 1.12
Thickness of the lower uterine segment (mm)	1.20 (0.50–8.00)a

Normal distribution (mean ± SD), Non-normal distribution (median [range]). Unless noted ^aotherwise, values are presented as mean ± SD

CS cesarean section, CSP cesarean scar pregnancy, D&C dilatation and curettage