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. 2016 Apr 21;2016(4):CD000543. doi: 10.1002/14651858.CD000543.pub4

Summary of findings 3. Once daily dosing versus conventional dosing for induction of remission in ulcerative colitis.

Once daily dosing versus conventional dosing for induction of remission in ulcerative colitis
Patient or population: Patients with active mild to moderate ulcerative colitis
 Settings: Outpatients
 Intervention: Once daily dosing versus conventional dosing
Outcomes Illustrative comparative risks* (95% CI) Relative effect
 (95% CI) No of Participants
 (studies) Quality of the evidence
 (GRADE) Comments
Assumed risk Corresponding risk
Control OD versus conventional dosing
Failure to induce global
or clinical remission
477 per 10001 448 per 1000 
 (396 to 510) RR 0.94 
 (0.83 to 1.07) 944
 (4 studies) ⊕⊕⊕⊕
 high  
Failure to induce clinical
improvement
458 per 10001 398 per 1000 
 (311 to 504) RR 0.87 
 (0.68 to 1.10) 358
 (2 studies) ⊕⊕⊕⊝
 moderate2  
Failure to adhere to medication regimen 139 per 10001 189 per 1000 
 (89 to 398) RR 1.36 
 (0.64 to 2.86) 358
 (2 studies) ⊕⊕⊝⊝
 low3  
Adverse events 374 per 10001 329 per 1000 
 (273 to 400) RR 0.88 
 (0.73 to 1.07) 769
 (3 studies) ⊕⊕⊕⊝
 moderate4  
Withdrawal due to adverse events 24 per 10001 14 per 1000 
 (6 to 35) RR 0.58 
 (0.23 to 1.44) 940
 (4 studies) ⊕⊕⊝⊝
 low5  
*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: Relative risk
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 group risk estimates come from control arm of meta‐analysis, based on included trials.
 2 Downgraded one level due to sparse data (153 events).
 3 Downgraded two levels due to very sparse data (26 events).
 4 Downgraded one level due to sparse data (271 events). 
 5 Downgraded two levels due to very sparse data (9 events).