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Table 1 Description of cross-cultural adaptations for the National Institutes of Health Chronic Prostatitis Symptom Index

From: A systematic review of cross-cultural adaptation of the National Institutes of Health Chronic Prostatitis Symptom Index

Language-population Year Sample size Sample size calculation Consecutive or not Time interval of test–retest reliability
Original-American [7, 9,10,11] 1999/2003/2006 261 CPPS/151 CP, 149 BPH, 134 healthy controls/ 174 CP/CPPS/a randomly selected cohort of white men 47 to 90 years old No/No/No/No No/No/No/No 1 month/ 6 weeks
Original-Australian [12] 2009 Australian men aged 16–64 years No No NA
Original-Malaysian [13] 2006 47 CP/CPPS, 20 BPH, 13 healthy controls No No NA
Original-Spanish [14] 2001 37 CP No No NA
Arabic-Egyptian [22] 2006 30 CPPS, 48 healthy controls No Yes 1 week
Chinese-Mainland [23] 2010 162 CP, 97 healthy controls No Yes 4–6 h
Chinese-Malaysian [13] 2006 32 CP/CPPS, 43 BPH, 72 healthy controls No No Short-term test–retest was evaluated 1 week later, long-term 14 weeks later
Danish [24] 2019 112 CP/CPPS No No Four days
Estonian [25] 2006 64 CP/CPPS, 73 controls without CP/CPPS No No NA
Finnish [26] 2003 155 CPPS, 12 controls had no previous urological history No Yes  < 1 week later
French-Canadian [27] 2005 36 CP/CPPS, 38 controls presented for pre-vasectomy consultation No Yes 14 days
German (1,2) [28, 29] 2001, 2004 137 patients with CP/CPPS NIH type III No Yes NA
Italian [30] 2005 42 CPPS, 81 healthy controls No No 1 week later
Japanese (a) [31] 2002 34 patients with CP/CPPS NIH type III, 35 BPH, 18 controls No No NA
Japanese (b) [32] 2002 103 CP, 60 BPH, 87 healthy controls No No 2 weeks
Malaysian [13] 2006 21 CP/CPPS, 8 BPH, 12 healthy controls No No Short-term test–retest was evaluated 1 week later, long-term 14 weeks later
Persian [33] 2020 42 CP/CPPS, 38 healthy controls No Yes 1 week
Portuguese-Brazilian [34] 2013 30 CPPS No Yes 1 h
Spanish [14] 2001 37 CP No Yes NA
Turkish [35] 2020 116 CP/CPPS, 88 healthy controls No No 2 weeks
  1. CP, chronic prostatitis; CPPS, chronic pelvic pain; BPH, benign prostatic hyperplasia; NA = not available; German (1,2), two German publications with the same adaptation; Japanese (a) and Japanese (b), two different Japanese adaptations