Cochrane · systematic review · CD009832
Zinc supplementation for tinnitus
Person, OC, Puga, MES, da Silva, EMK, et al. · Cochrane Database of Systematic Reviews · 2016 · Cochrane Library
ENTAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
7
current version
GRADE rated
2
No studies
5
Included studies
NR
No studies 5 · 71.4%Ungraded 0 · 0%Very low 2 · 28.6%Low 0 · 0%Moderate 0 · 0%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Comparison
Population: adults over 18 years with tinnitus
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Improvement in tinnitus severity and disability, measured by a validated tinnitus‐specific questionnaire (THQ) Proportion of patients improved 4 months | no estimate extracted | 1 study · 187 participants | Very low Downgraded: publication bias |
Adverse effects of treatment | no estimate extracted | NR | No studies |
Quality of life | no estimate extracted | NR | No studies |
Socioeconomic impact associated with work | no estimate extracted | NR | No studies |
Anxiety and depression disorders | no estimate extracted | NR | No studies |
Psychoacoustic parameters | no estimate extracted | NR | No studies |
Tinnitus loudness (dB) | MD 0.5 | 1 study · 41 participants | Very low Downgraded: publication bias |