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. 2010 Jul 7;2010(7):CD002839. doi: 10.1002/14651858.CD002839.pub2

Strand 1984.

Methods Single centre, double‐blind, placebo‐controlled 
 Randomisation using serially numbered sealed envelopes; the code was held by pharmacy 
 Stratified by delay of symptoms to randomisation, age and severity of symptoms 
 ITT analysis
Participants Sweden 
 26 participants: T: 13, C: 13 
 Mean age: 74 years, T: 76.3 years, C: 71.5 years 
 14 males, 12 females 
 100% CT 
 Enrolment within 36 hours
Interventions T: loading dose of 4 mmol magnesium sulfate iv over 10 minutes followed by continuous iv of 4 mmol magnesium sulfate during the following 8 hours, then after iv infusion one 250 mg magnesium hydroxide po, then 250 mg magnesium hydroxide po 8‐hourly for following 5 days 
 C: equal volumes of isotonic saline and placebo pills 
 Rx: 5 days
Outcomes Scandinavian Stroke Study Group (neurological score) at baseline, day 6 and 6 months 
 Method of BP measurement not known
Notes Ex: SBP < 110 mmHg on admission, AV‐block II‐III, major renal impairment, respiratory insufficiency, pre‐existing functional impairment confusing proper evaluation of therapeutic effects, concomitant severe disorders, and ongoing anticoagulant treatment, plasma creatinine > 200 umol/l and EKG showing AV‐block II‐III
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Low risk Randomisation using serially numbered sealed envelopes
Allocation concealment? Low risk Randomisation code were held by pharmacy
Blinding? Low risk Probably done
Completeness of follow‐up Unclear risk Unclear from publication