Table 4.

Risk factors of severe endometriosis.

Risk factors	HR (95% CI)	P value
Age (≤38 yrs old)	3.936 (1.961–7.898)	<.0001**
Preoperative Hb (≤13.0 g/dL)	0.744 (0.310–1.784)	.507
Preoperative Hct (≤37.9%)	2.028 (0.892–4.611)	.091
Preoperative MCV (≤88.5 fL)	2.339 (1.131–4.837)	.022*
Preoperative MCH (≤29.5 pg)	0.830 (0.395–1.744)	.622
POD#1 Hb (<11.6g/dL)	2.331 (1.211–4.484)	.011*
POD#1 NLR (>2.5)	3.065 (1.725–5.447)	<.0001**

Hb = hemoglobin, Hct = hematocrit blood test, MCV = mean corpuscular volume, MCH = mean corpuscular hemoglobin, NLR = neutrophil-to-lymphocyte ratio, POD = postoperative day.

^* P < .05.

^** P < .0001.