Question · asked by 1 review
Systemic beta carotene or carotenoids (incl. lycopene) vs placebo or no treatment: Malignant transformation (oral cancer development)
- Population
- People with a diagnosis of oral leukoplakia
- Intervention
- Systemic beta carotene or carotenoids (incl. lycopene)
- Comparison
- placebo or no treatment
- Outcome
- Malignant transformation (oral cancer development)
It is very uncertain whether systemic beta carotene or carotenoids (incl. lycopene) changes oral cancer development compared with placebo or no treatment (very low certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Systemic beta carotene or carotenoids (incl. lycopene) vs Placebo or no treatment Oral cancer development · People with a diagnosis of oral leukoplakia · 24 months It is very uncertain whether systemic beta carotene or carotenoids (incl. lycopene) changes oral cancer development compared with placebo or no treatment (very low certainty). Interventions for treating oral leukoplakia to prevent oral cancer (2016) · Cochrane All outcomes | RR 0.71 [0.24, 2.09] | 2 studies · 132 participants | Very low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Interventions for treating oral leukoplakia to prevent oral cancer 2016 · Cochrane All outcomes | 2016-05 | Not listed | Not assessed |
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.