Table 1

Baseline and ultrasonographic patient characteristics

VariableAllNon-SLN
(Group 1)
SLN
(Group 2)
P value
All cases, N460192268
Age, years, median (IQR)5655 (29–63)56 (50–68)0.063
BMI, kg/m2, median (IQR)2929 (24–33)28 (24.9–33)0.270
Menopausal state, n (%)0.325
 Pre-menopausal163 (35.4)63 (32.8)100 (37.3)
 Post-menopausal297 (64.6)129 (67.2)168 (62.7)
Co-morbidities, n (%)
 Any co-morbidity211 (45.9)88 (45.8)123 (45.9)0.989
 Hypertension127 (27.6)49 (25.5)78 (29.1)0.459
 Diabetes48 (10.4)14 (7.3)34 (12.7)0.065
Symptoms, n (%)
 AUB290 (63.0)120 (62.5)170 (63.4)0.845
 Irregular period8 (4.9)2 (3.2)6 (3.7)0.416
US diagnosis, n (%)<0.001
 Endometrial polyp268 (58.3)132 (68.8)136 (50.7)
 Inhomogeneous endometrial thickening192 (41.7)60 (31.2)132 (49.3)
Endometrial thickness, n (%)0.814
 <20 mm367 (79.8)152 (79.2)215 (80.2)
 ≥20 mm93 (20.2)40 (20.8)53 (19.8)
  • *Mann–Whitney U test.

  • AUB, abnormal uterine bleeding; BMI, body mass index; LN, sentinel lymph node; US, ultrasound.