Table 2. Time to resolution and likelihood of surgical excision by pre-treatment hCG.

	Time to resolution		Rescue surgery
	N = 163		N = 53
Baseline hCG (IU/L)	n (%)	Days, median (IQR)	n (%)	Odds ratio (95% confidence interval)
<1000 (n = 130)	107 (65.6)	20.0 (13, 29)	23 (43.4)	1 (reference)
≥1000–1999 (n = 44)	36 (22.1)	31.5 (21, 41) b	8 (15.1)	1.03 (0.43, 2.51)
≥2000–2999 (n = 25)	14 (8.6)	34.5 (22, 48) b	11 (20.8)	3.66 (1.47, 9.07)
≥3000 (n = 17)	6 (3.7)	33.5 (20, 39)	11 (20.8)	8.53 (2.86, 25.42)

Time to resolution was calculated excluding 53 cases that required surgery. Odds ratios and 95% confidence intervals were calculated using logistic regression. 216 included in analysis.

^b denotes P<0.001 compared to pre-treatment hCG <1000.