TABLE 24Continuous trial and participant characteristic variables in RCTs and non-RCTs

VariableStatistical testRCTNon-RCTp-value
No. of participantsMean131.06305.010.422
SD135.671,095.19
KurtosisStatistic2.49565.042
SE0.6680.397
SkewnessStatistic1.5627.627
SE0.340.2
% maleMean55.0283< 0.0001
SD38.7626.06
KurtosisStatistic−1.4351.748
SE0.6810.413
SkewnessStatistic−0.341−1.535
SE0.3470.208
Mean age (years)Mean35.9836.670.084
SD12.847.31
KurtosisStatistic5.426.554
SE0.7240.437
SkewnessStatistic2.1721.663
SE0.3690.22
% CaucasianMean56.751.330.436
SD28.6128
KurtosisStatistic−0.903−0.846
SE0.9530.545
SkewnessStatistic−0.514−0.125
SE0.4910.276

From: 3, Overview of the literature

Cover of A Systematic Review of Prevention and Intervention Strategies for Populations at High Risk of Engaging in Violent Behaviour: Update 2002–8
A Systematic Review of Prevention and Intervention Strategies for Populations at High Risk of Engaging in Violent Behaviour: Update 2002–8.
Health Technology Assessment, No. 16.3.
Hockenhull JC, Whittington R, Leitner M, et al.
Southampton (UK): NIHR Journals Library; 2012 Feb.
© 2012, Crown Copyright.

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