Table 1.

Demographics of study participants and of participants with and without hydronephrosis

Demographic	N	Study Population	No Hydronephrosis (N = 125)	Hydronephrosis (N = 55)	P (No Hydronephrosis vs Hydronephrosis)
Age (y), mean (SD)	180	57.9 (9.0)	57.1 (8.9)	59.9 (9.0)	.052*
BMI (kg/m2), mean (SD)	180	29.2 (4.6)	29.3 (4.8)	28.9 (4.3)	.54*
Self-reported race, n (%)					.65†
Caucasian	32	17.80%	25 (20.0)	7 (12.7)
African American	6	3.30%	4 (3.2)	2 (3.6)
Asian	1	0.60%	1 (0.8)	0 (0)
Other	141	78.30%	95 (76.0)	46 (83.6)
Ethnicity, n (%)					.65‡
Hispanic	163	90.60%	114 (91.2)	49 (89.1)
Non-Hispanic	17	9.40%	11 (8.8)	6 (10.9)
Postmenopausal (%)	141	80.60%	98 (79.0)	43 (84.3)	.42‡
Parity, median (range)	180	3 (0–16)	3 (0–16)	4 (0–15)	.64§
Number of cesarean deliveries, median (range)	178	2 (0–3)	0 (0–1)	0 (0–3)	.65§
Presence of comorbidities, n (%)
HTN	40	22.20%	28 (22.4)	12 (21.8)	.93‡
DM	22	12.20%	10 (8)	12 (21.8)	.009‡
Smoker	3	1.70%	3 (2.4)	0	.25‡

BMI, body mass index; DM, diabetes mellitus; HTN, hypertension; SD, standard deviation.

^*Student t test.

^†Fisher exact test.

^‡Chi-square test.

^§Wilcoxon rank sum test.