Table 2:

Comparisons of mean PFV of the stone-bearing and non-stone-bearing kidneys.

Variable	Mean PFV of stone- bearing kidney (cc)	Mean PFV of non-stone- bearing kidney (cc)	Mean difference (cc)	95% Confidence Interval	p-value
Male (n=16)	545.45	433.29	112.1	6.2–218	0.039
Female (n=24)	271.4	229	42.4	6.6–78.1	0.022
Obesea (n=17)	461.81	361.38	100.4	−7.8–208.6	0.066
Non- obeseb (n=23)	343.8	291.49	52.3	15.7–88.8	0.007
Diabetes mellitus (n=16)	502	406.1	96	−21.7–213.4	0.103
Hypertension (n=12)	302.53	277.81	24.7	−17.58−67.0	0.224
Calcium oxalate (n=19)	336.08	272.17	63.9	24.4–103.4	0.003
Calcium phosphate (n=9)	410.36	261.96	148.4	−63.4–360.2	0.145
Uric acid (n=10)	518.25	501.46	16.8	−40.2–86.5	0.557
Struvite (n=2)	248.52	152.11	96.4	−633.2–826	0.342

^aBMI ≥ 30

^bBMI ≤ 29.9