REVIEW ER 'S CONCLUSIONS We found no significant evidence to support the use of clotiapine rather than other ' st and ard ' or ' non-st and ard ' treatments for the management of  acute psychotic illness .
BACKGROUND Acute psychotic illness , especially when associated with agitated or violent behaviour , requires urgent pharmacological tranquillisation or sedation .
Clotiapine , a dibenzothiazepine neuroleptic , is being used for this purpose in several countries .
OBJECTIVES To estimate the effects of clotiapine when compared to other ' st and ard ' or ' non-st and ard ' treatments of acute psychotic illness in controlling disturbed behaviour and reducing psychotic symptoms .
Components of variance and intraclass correlations for the design of community-based surveys and intervention studies: data from the Health Survey for England 1994.
The authors estimated components of variance and intraclass correlation coefficients ( ICCs ) to aid in the design of complex surveys and community intervention studies by analyzing data from the Health Survey for Engl and 1994 . This cross-sectional survey of English adults included data on a range of lifestyle risk factors and health outcomes . For the survey , households were sample d in 720 postal code sectors nested within 177 district health authorities and 14 regional health authorities . Study subjects were adults aged 16 years or more .  ICCs and components of variance were estimated from a nested r and om-effects analysis of variance . Results are presented at the district health authority , postal code sector , and household levels . Between-cluster variation was evident at each level of clustering . In these data , ICCs were inversely related to cluster size , but design effects could be substantial when the cluster size was large . Most ICCs were below 0.01 at the district health authority level , and they were mostly below 0.05 at the postal code sector level . At the household level , many ICCs were in the range of 0.0 - 0.3 . These data may provide useful information for the design of epidemiologic studies in which the units sample d or allocated range in size from households to large administrative areas
REVIEW ER 'S CONCLUSIONS We found no significant evidence to support the use of clotiapine rather than other ' st and ard ' or ' non-st and ard ' treatments for the management of  acute psychotic illness .
BACKGROUND Acute psychotic illness , especially when associated with agitated or violent behaviour , requires urgent pharmacological tranquillisation or sedation .
Clotiapine , a dibenzothiazepine neuroleptic , is being used for this purpose in several countries .
OBJECTIVES To estimate the effects of clotiapine when compared to other ' st and ard ' or ' non-st and ard ' treatments of acute psychotic illness in controlling disturbed behaviour and reducing psychotic symptoms .