Predictors and clinical features of methotrexate (MTX) therapy for ectopic pregnancy

Table 1 Patient characteristics

Variable	Successful (n = 166)	Failed (n = 72)	P value
Age (years)	29.05 ± 4.80	29.85 ± 5.85	0.258^a
Amenorrhea (days)	47.18 ± 6.79	47.28 ± 6.36	0.833^a
Parity	1.86 ± 0.96	1.69 ± 1.17	0.510^c
First pregnancy n (%)	38 (22.89%)	15 (20.83%)	0.726^b
Body surface area (m²)	1.55 ± 0.10	1.54 ± 0.10	0.587^c
Longest ectopic mass diameter (mm)	2.98 ± 1.25	2.99 ± 1.05	0.932^a
Initial β-hCG level (IU/L)	2538.08 ± 3107.07	3533.17 ± 1967.80	0.000^c

(a, mean ± SD and Student’s t-test. b, chi-squared test. c, mean ± SD and Mann-Whitney U test)

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