Skip to main content
. 2013 Sep 1;2013(9):CD003603. doi: 10.1002/14651858.CD003603.pub3

Summary of findings for the main comparison. Hyperbaric oxygen (HBO) versus no HBO.

Hyperbaric oxygen (HBO) versus no HBO
Patient or population: people requiring dental implants
Settings: specialist centre
Intervention: HBO
Comparison: no HBO
Outcomes Illustrative comparative risks* (95% CI) Relative effect
 (95% CI) Number of participants
 (studies) Quality of the evidence
 (GRADE) Comments
Assumed risk Corresponding risk
Without HBO HBO
Prosthetic failure Low risk population RR 3.00 (0.13, 67.06) 24
 (1) ⊕⊝⊝⊝2
 very low quality  
10 per 10001 30 per 1000
 (1 to 670)
High risk population
100 per 1000 300 per 1000
 (13 to 1000)
*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% CI) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

1The risk in the control arm was 0% so low risk of 1% and high risk of 10% assumed.
 2 Downgraded due to one small study at high risk of bias.

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.