Introduction
Materials and methods
Search strategy
Databases | Search strategy | Date of search | Time span |
---|---|---|---|
Pubmed | “Lichtenstein” AND/OR “inguinal hernia” AND “chronic pain” AND/OR “CPIP” | 20-11-2015 | 2006—date of search |
EMBASE | “Lichtenstein” AND/OR “inguinal hernia” AND “chronic pain” AND/OR “CPIP” | 20-11-2015 | 2006—date of search |
Central (Cochrane Library) | “Lichtenstein” AND/OR “inguinal hernia” AND “chronic pain” AND/OR “CPIP” in cohort studies and randomised controlled trials | 20-11-2015 | 2006—date of search |
Selection of studies
Outcome
Data
Data analysis and bias detection
Results
Literature search
Outcome
Expert studies | 3 months CPIP | 6 months CPIP | 12 months CPIP | 24 months CPIP | ||
---|---|---|---|---|---|---|
Author | No of operations | |||||
Jorgensen | 2012 | 334 | 29/329 | |||
Koch | 2008 | 317 | 17/317 | |||
Paajanen | 2011 | 302 | 51/286 | |||
Paajanen | 2012 | 312 | 17/312 | |||
Subtotal | 1265 | 97/932 | 17/312 | |||
Subtotal (%) | 10.4 % | 5.4 % | ||||
Smietanski | 2011 | 199 | 39/199 | 15/199 | 14/199 | |
Anadol | 2011 | 60 | 11/27 | |||
Dalenback | 2009 | 158 | 4/158 | 5/154 | ||
Demetrhashvili | 2014 | 198 | 22/198 | 15/198 | 9/198 | |
Total | 1880 | 65/555 | 15/199 | 131/1483 | 37/537 | |
Total (%) | 11.7 % | 7.5 % | 8.8 % | 6.9 % |
Non expert studies | 3 months CPIP | 6 months CPIP | 12 months CPIP | 24 months CPIP | ||
---|---|---|---|---|---|---|
Author | No of operations | |||||
Champault | 2007 | 237 | ||||
Nienhuis | 2008 | 86 | 34/84 | |||
Sadowski | 2008 | 78 | 14/78 | |||
Langeveld | 2010 | 317 | 65/231 | |||
Koning | 2012 | 159 | 80/155 | |||
Nikkolo (1) | 2014 | 134 | 54/134 | |||
Nikkolo (2) | 2014 | 145 | 56/145 | |||
Chatzimavroudis | 2014 | 50 | 13/50 | 7/50 | 3/50 | |
Total | 1206 | 61/212 | 110/279 | 152/436 | 51/282 | |
Total (%) | 28.8 % | 39.4 % | 34.8 % | 18.1 % |
VAS measurement | Measurement conditions | Note | |
---|---|---|---|
Reporting on VAS scores
| |||
Expert studies | |||
Joreensen | 2012 VAS score for whole study population | Not specified | |
Koch | 2008 VAS score for whole study population | Rest and exercise | Not at 3- and 12-month interval |
Paajanen | 2011 VAS score for whole study population | Exercise | |
Paajanen | 2012 VAS score for whole study population | Rest | |
Smietanski | 2011 VAS score for whole study population | Not specified | |
Anadol | 2011 VAS score for CPIP subgroup | Not specified | |
Dalenback | 2009 VAS score for whole study population | Not specified | Not at 3- and 12-month interval |
Demetrashvili | 2014 VAS score for CPIP subgroup | Not specified | |
Non expert studies | |||
Champault | 2007 VAS score for CPIP subgroup | Not specified | In gradations (<5 vs. >5) |
Nienhuis | 2008 VAS score for whole study population | Not specified | Not at 3-month interval |
Sadowski | 2008 VAS score for CPIP subgroup | Not specified | In gradations |
Langeveld | 2010 VAS score for whole study population | Not specified | Not at 12-month interval |
Koning | 2012 VAS score for whole study population | Rest and exercise | Not at 12-month interval |
Nikkolo (1) | 2014 VAS score for CPIP subgroup | Rest and exercise | |
Nikkolo (2) | 2014 VAS score for CPIP subgroup | Rest and exercise | |
Chatzimavroudis | 2014 VAS score for CPIP subgroup | Not specified |