Lodge 2005.
Methods | Randomised clinical trial Sequence generation: adequate. Allocation concealment: adequate. Blinding: adequate. Incomplete outcome data addressed: inadequate. Free of selective reporting: inadequate. Free of other bias: inadequate. |
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Participants | Country: France, Germany, Spain, United Kingdom.
Number randomised: 204.
Post‐randomisation drop‐out: 19 (9.3%) (see notes).
Mean age: 56.5 years.
Females: 92 (49.7%).
Major liver resections: not stated.
Cirrhotic livers: 0 (0%). Inclusion criteria:
Exclusion criteria:
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Interventions | Participants were randomly assigned to three groups. Group 1: rFVIIa 80 mcg/kg (n = 59). Group 2: rFVIIa 20 mcg/kg (n = 63). Group 3: control (n = 63). Further details of intervention: IV drug 5 minutes before incision and repeated at 5 hours if anticipated operating time > 6 hours. Other details: Vascular occlusion: PTC (in 64.9%). Method of parenchymal transection: not stated. Management of raw surface: not stated. Other co‐interventions to decrease blood loss: none reported. |
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Outcomes | The outcome measures were mortality, transfusion requirements, peri‐operative morbidity, operating time, and blood loss. | |
Notes | 19 patients from all three groups (individual groups not stated) in whom drug was not administered (n = 4) and in those who did not undergo liver resection after the drug was administered (n = 15) were excluded from analysis. Attempts to contact the authors in November 2008 were unsuccessful. |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Adequate sequence generation? | Low risk | Quote: "Randomization was computer‐generated and was performed after patient eligibility assessments on the day of surgery by means of a central interactive voice response system set up by Novo Nordisk A/S." |
Allocation concealment? | Low risk | Quote: "Randomization was computer‐generated and was performed after patient eligibility assessments on the day of surgery by means of a central interactive voice response system set up by Novo Nordisk A/S." |
Blinding? All outcomes | Low risk | Quote: "To maintain blinding, an equal volume of trial drug per body weight was administered to all patients, irrespective of treatment group allocation." |
Incomplete outcome data addressed? All outcomes | High risk | Comment: 19 patients were excluded post‐randomisation. This could be related to the treatment effect. |
Free of selective reporting? | High risk | Comment: Important outcomes such as liver failure were not reported. |
Free of baseline imbalance? | Low risk | Yes. |
Free of early stopping bias? | Low risk | Comment: The trialists recruited the intended number of patients. |
Free of academic bias? | Low risk | Comment: There were no previously published trials of same comparisons by the author. |
Free of sponsor bias? | High risk | Quote: "The authors thank the patients and the hospital staff participating in the trial, as well as Allan Blemings, M.Sc. (Statistician), and Karsten Soendergaard, M.Sc. (Clinical Researcher), both at Novo Nordisk A/S, Copenhagen, Denmark." |