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. 2017 Jul 31;2017(7):CD009377. doi: 10.1002/14651858.CD009377.pub3

Summary of findings 3. HALOPERIDOL compared to OTHER ANTIPSYCHOTIC: b. CHLORPROMAZINE for psychosis‐induced aggression or agitation.

HALOPERIDOL compared with OTHER ANTIPSYCHOTIC: b. CHLORPROMAZINE for psychosis‐induced aggression or agitation
Patient or population: patients with psychosis‐induced aggression or agitation
 Setting: inpatients.
 Intervention: HALOPERIDOL
 Comparison: OTHER ANTIPSYCHOTIC: b. CHLORPROMAZINE
Outcomes Illustrative comparative risks* (95% CI) Relative effect
 (95% CI) No of Participants
 (studies) Quality of the evidence
 (GRADE) Comments
Assumed risk Corresponding risk
OTHER ANTIPSYCHOTIC: b. CHLORPROMAZINE HALOPERIDOL
Tranquillisation or asleep 
 Not tranquil or asleep Low1 RR 1.93 
 (1.04 to 3.60) 39
 (1 study) ⊕⊝⊝⊝
 very low2,3,4  
200 per 1000 386 per 1000 
 (208 to 720)
Moderate1
500 per 1000 965 per 1000 
 (520 to 1000)
High1
700 per 1000 1000 per 1000 
 (728 to 1000)
Repeated need for rapid tranquillisation ‐ more that 1 injection Low1 RR 1.07 
 (0.89 to 1.28) 30
 (1 study) ⊕⊝⊝⊝
 very low2,3,4  
800 per 1000 856 per 1000 
 (712 to 1000)
Moderate1
900 per 1000 963 per 1000 
 (801 to 1000)
High1
990 per 1000 1000 per 1000 
 (881 to 1000)
Specific behaviour ‐ threat or injury of harm to self or others ‐ not reported See comment See comment Not estimable See comment No study reported this outcome.
Global outcome ‐ not any improvement Low1 RR 0.15 
 (0.05 to 0.49) 89
 (2 studies) ⊕⊝⊝⊝
 very low2,3  
1000 per 1000 150 per 1000 
 (50 to 490)
Moderate1
300 per 1000 45 per 1000 
 (15 to 147)
High1
500 per 1000 75 per 1000 
 (25 to 245)
Adverse effects: specific ‐ cardiovascular ‐ hypotension Low1 RR 0.51 
 (0.01 to 2.60) 30
 (1 study) ⊕⊝⊝⊝
 very low2,3,4  
50 per 1000 10 per 1000 
 (0 to 192)
Moderate1
150 per 1000 30 per 1000 
 (1 to 577)
High1
250 per 1000 50 per 1000 
 (2 to 962)
Adverse effects: specific ‐ central nervous system ‐ seizures Low1 RR 0.33 
 (0.01 to 7.58) 30
 (1 study) ⊕⊝⊝⊝
 very low2,3,4  
10 per 1000 3 per 1000 
 (0 to 76)
Moderate1
50 per 1000 17 per 1000 
 (0 to 379)
High1
150 per 1000 50 per 1000 
 (1 to 1000)
Economic outcome ‐ not reported See comment See comment Not estimable See comment No study reported this outcome.
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
 CI: Confidence interval; RR: Risk ratio;
GRADE Working Group grades of evidence
 High quality: Further research is very unlikely to change our confidence in the estimate of effect.
 Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
 Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
 Very low quality: We are very uncertain about the estimate.

1 Control risk ‐ moderate risk roughly equates to that of the control group
 2 Risk of bias: rated 'serious' ‐ not explicitly described as randomised, missing data was not imputed using appropriate methods such as LOCF, small study.
 3 Imprecision: rated 'serious' ‐ small study.
 4 Publication bias: rated 'strongly suspected' ‐ small study (15 participants per group).