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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: J Sex Med. 2015 Jan 9;12(3):713–719. doi: 10.1111/jsm.12816

Table 3. ED prevalence and association among RIP subgroups.

Subgroups SCD Patients Non-SCD Patients P-Value
Including Mild ED n = 19 n = 4
 Mean Age of RIP among ED patients, yrs (SD) 18.5 (6.3) 22.8 (5.0) 0.0944
 Mean Time-Length with RIP among ED patients, yrs (SD) 9.5 (6.7) 3.8 (4.2) 0.0807
 ≤2 hours Duration, n (%) n = 30
14 (46.7)
n = 10
0 (0)
0.0075
 2-5 hours Duration, n (%) n = 10
5 (50)
n = 9
4 (44.4)
1.0000
 ≥Weekly Frequency, n (%) n = 28
13 (46.4)
n = 14
2 (14.3)
0.0404
 ≤Monthly Frequency, n (%) n = 12
6 (50)
n = 5
2 (40)
1.0000
 Major Episodes among ED patients, n (%) n = 19
7 (36.8)
n = 4
2 (50)
1.0000
Excluding Mild ED n = 13 n = 3
 Mean Age of RIP among ED patients, yrs (SD) 16.1 (2.5) 25.0 (2.6) 0.0120
 Mean Time-Length with RIP among ED patients, yrs (SD) 11.1 (7.1) 2.1 (3.0) 0.0221
 ≤2 hours Duration, n (%) n = 30
10 (33.3)
n = 10
0 (0)
0.0428
 2-5 hours Duration, n (%) n = 10
3 (30)
n = 9
3 (33.3)
1.0000
 ≥Weekly Frequency, n (%) n = 28
9 (32.1)
n = 14
1 (7.1)
0.1249
 ≤Monthly Frequency, n (%) n = 12
4 (33.3)
n = 5
2 (40)
1.0000
 Major Episodes among ED patients, n (%) n = 13
5 (38.5)
n = 3
2 (66.7)
0.5500

SCD = sickle cell disease, n = number, yrs = years, SD = standard deviation RIP = recurrent ischemic priapism, ED = erectile dysfunction