Okur 2016.
| Methods | Randomized clinical trial Sequence generation by "simple random sampling" Follow‐up for 6 months |
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| Participants | Participants: 90 adults in a university setting in Turkey Operation: inguinal herniorrhaphy 3 groups, size: 30/30/30 Age (± SD), group 1, 2, 3: not described Men/women, group 1, 2, 3: not described Exclusion criteria: not described |
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| Interventions |
Group 1 (spinal): SAB was administered. Further detail about anaesthetic regimen and timing of intervention was not provided. Group 2 (TAP): in addition to SAB, TAP block was performed. No additional detail about anaesthetic regimen or timing of intervention provided. Group 3 (IINB): in addition to SAB, ilioinguinal/iliohypogastric nerve block was performed. No additional detail about anaesthetic regimen or timing of intervention provided. Adjuvants: none Immediate post‐op pain control: significantly improved |
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| Outcomes | Dichotomous: none Continuous: NRS score Other reported: NRS score and amount of analgesia given in perioperative period |
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| Notes | Published only as abstract. We were unable to obtain data on pain outcomes or additional information about randomization and blinding methods from the study author. Funding sources: funding of study not described Conflicts of interest: the study authors have no conflicts of interest to disclose. |
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| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | High risk | Sequence generation by, quote: "simple random sampling" |
| Allocation concealment (selection bias) | Unclear risk | Concealment of allocation not described |
| Blinding of participants and personnel (performance bias) All outcomes | Unclear risk | Blinding of participants and personnel not described |
| Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Blinding of outcome assessors not described |
| Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Rate of attrition not described |
| Selective reporting (reporting bias) | Unclear risk | Unclear if subgroup analysis performed |
| Null bias | Low risk | Quote: "NRS scores ... in TAP block were significantly smaller in all measurements..."." |