Table 2. Clinical features of the case and control women.

Clinical manifestations	Case (n = 43)	Control (n = 43)	P value
Abdominal pain	42 (97.7%)	10 (23.3%)	P < .01
Pain duration	5.3±18.5 days	1.8 ±2.4 days	P = .56
Pain intensity a	5.4±2.5	3.0±1.4	P = .01

Note-Data for pain duration and pain intensity are mean day ± standard deviation and mean scale ± standard deviation.

^a Pain intensity was quantified by a using numerical rating scale (NRS). The NRS was available in 34 of 42 women with abdominal pain in the case group and 8 of 10 women with abdominal pain in the control group.