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Table 3 Baseline characteristics of patients whose stones were located > 90 mm from the UPJ

From: Cost-effectiveness of anti-retropulsive devices varies according to the locations of proximal ureteral stones: a retrospective cohort study

  Type of procedure p value
URS URS + ARD
All patients. no 22 14  
Gender, no. Male/Female 19/3 13/1 1.000
Age, years, mean ± SD,
median [range]
51.0 ± 14.4, 50.5
[27–86]
46.7 ± 12.3, 50.5
[25–64]
0.390
BMI, mean ± SD,
median [range]
24.8 ± 3.5, 24.0
[15.6–31.2]
24.0 ± 1.9, 23.7
[21.5–26.7]
0.482
Hydronephrosis grade, no. Mild/Moderate/Severe 11/6/5 9/4/1 0.457
Stone laterality (L/R), no 10/15 6/8 1.000
Stone size, mean ± SD
median [range]
   
 Length (mm) 12.2 ± 3.9, 12
[5–20]
11.0 ± 3.3, 12
[4–15]
0.351
 Width (mm) 7.5 ± 2.3, 8
[3–11]
6.5 ± 1.6, 6
[3–9]
0.163
 Burden (mm2) 75.4 ± 35.6, 75.4
[11.8–141.3]
58.4 ± 24.2, 63.6
[9.4–91.9]
0.127
 Density (HU) 1266.3 ± 266.8, 1330.5
[775–1630]
1149.9 ± 237.6, 1157
[782–1530]
0.300
Operation time (min),
mean ± SD, median [range]
38.1 ± 19.8, 35
[14–90]
46.3 ± 13.1, 44
[25–67]
0.210
Intraoperation complications 0 0
Postoperative stay (days),
mean ± SD, median [range]
3.8 ± 1.5, 3
[2–7]
3.7 ± 1.4, 3.5
[1–6]
0.841
Post-fever, no 0 0
Post-sepsis, no 0 0
Total expense (¥),
mean ± SD, median [range]
19,389.6 ± 4841.9, 19,365.4
[12,566.0 ± 27,265.0]
24,127.0 ± 4938.1, 24,621.7
[16,076.0 ± 32,041.0]
0.011
SFR (%)    
 One-day 100.0 100.0
 One-month 100.0 100.0
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