Table 1.

Distribution of initial serum beta-hCG levels

Initial beta-hCG titer	Group I	Group IIa	Group IIb	Total
	Immediate intervention	Unsuccessful expectant management	Successful expectant management
<2,000	1	88	92	181
2,000–2,500	0	10	5	15
>2,500	32	32	2	66
Total	33	130	99	262

Initial serum beta-hCG distribution of patients without severe pain or hemodynamic instability in the three management groups