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Table 2 Comparison between 3 groups regarding stone expulsion rate, stone expulsion time, number of hospital visits for pain and amount of analgesic required

From: Efficacy and safety of silodosin, vardenafil versus silodosin in combination with vardenafil as a medical expulsive therapy for distal ureteric stones: a prospective randomized double-blind study

 Group IGroup IIGroup IIIP value
No. = 30No. = 30No. = 30
Stone expulsion rateNo7 (23.3%)12 (40.0%)3 (10.0%)0.025
Yes23 (76.7%)18 (60.0%)27 (90.0%)
Stone expulsion time (days)Mean ± SD12.50 ± 1.6614.67 ± 1.2411.23 ± 3.14< 0.01
Range10–1612–187–18
Number of hospital visit for painMean ± SD1.35 ± 0.91.65 ± 1.091.02 ± 0.800.038
Range0–40–50–3
Amount of analgesic required (mg)Mean ± SD613.44 ± 483.62716.97 ± 685.3313.6 ± 285.50.008
Range0–18000–30000–3000