Table 1. Baseline characteristics according to incident abnormal uterine bleeding (AUB).

Values are presented as mean±SD, median (IQR), or n (%), as appropriate.

t=independent-samples t-test statistic; χ²=Pearson chi-square statistic; Z=standardized Mann-Whitney test statistic; AUB=abnormal uterine bleeding; BMI=body mass index; HbA1c=glycated hemoglobin; LDL-C=low-density lipoprotein cholesterol; HDL-C=high-density lipoprotein cholesterol; PCOS=polycystic ovary syndrome

Characteristic	AUB (n=45)	No AUB (n=105)	Test statistic	P value
Age, years	44.6±6.3	42.8±6.7	t=1.57	0.119
BMI, kg/m²	31.7±4.9	28.9±4.7	t=3.25	0.002
BMI ≥30 kg/m²	27 (60.0%)	42 (40.0%)	χ²=5.07	0.024
Diabetes duration, years	9.3±4.8	7.1±4.4	t=2.64	0.010
HbA1c, %	8.8±1.3	7.9±1.2	t=3.97	<0.001
HbA1c ≥8.5%	29 (64.4%)	38 (36.2%)	χ²=10.17	0.001
Fasting glucose, mg/dL	181±42	159±37	t=3.04	0.003
Total cholesterol, mg/dL	201±39	189±37	t=1.79	0.075
LDL-C, mg/dL	122±33	116±31	t=1.04	0.302
HDL-C, mg/dL	41.3±8.1	45.2±8.6	t=−2.65	0.009
Triglycerides, mg/dL	194 (158-238)	164 (132-203)	Z=2.88	0.004
Hypertension	21 (46.7%)	36 (34.3%)	χ²=2.05	0.152
PCOS	10 (22.2%)	11 (10.5%)	χ²=3.61	0.057
Insulin treatment	17 (37.8%)	28 (26.7%)	χ²=1.85	0.174
Metformin treatment	35 (77.8%)	87 (82.9%)	χ²=0.54	0.464