Oberoi 2009.
Methods |
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Participants | 1. 200 patients enrolled (obstetric female patients aged 20 to 35 belonging to ASA I undergoing elective or emergency lower segment caesarean section) Patients randomized to:
2. Losses to follow‐up and exclusions were not reported 2. Main characteristics of patients:
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Interventions |
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Outcomes | Outcomes were not classified as primary or secondary
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Notes |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Quote: "The patients were randomly allocated to one of the two groups Q or W according to computer generated numbers". (page 420) |
Allocation concealment (selection bias) | Unclear risk | Insufficient information to score this item as low or high risk of bias |
Blinding of participants (performance bias) | Unclear risk | Insufficient information to score this item as low or high risk of bias |
Blinding of outcome assessment (detection bias) All outcomes | Low risk | Quote: "Post‐operatively, follow up was done up to 7 days after the surgery or till the time of discharge by an anaesthesiologist who had no knowledge of the spinal needle." (page 421) |
Incomplete outcome data (attrition bias) All outcomes | Low risk | No patients were lost to follow‐up |
Selective reporting (reporting bias) | High risk | Severity of post‐dural puncture headache was assessed according to Corbey severity grading and visual analogue scale (VAS). This information is not reported. |
Other bias | Low risk | No other biases were identified |