Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,741 questions · 1,821 findings · 207 reviews

No studies found 297 · 16.3%GRADE not reported 191 · 10.5%Very low 333 · 18.3%Low 466 · 25.6%Moderate 414 · 22.7%High 120 · 6.6%

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous) - individual taste sensations · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

Zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… showed no clear difference in taste acuity improvement - objective outcome (continuous) -… compared with placebo; GRADE not reported.

1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Chronic renal failure
    Results (Mahajan 1980, chronic renal failure; Analysis 1.3): mean difference by taste sensation - salt MD 285 (95% CI 238.75 to 331.25); sweet MD 190 (142.36 to 237.64); sour MD 10 (-16.43 to 36.43); bitter MD 2.40…
    1 study · 22 participants
    GRADE not reported

Group‐format behavioural programmes vs alternative support

Group programme compared to face‐to‐face individual intervention · people who smoke

Group‐format behavioural programmes showed no clear difference in group programme compared to face‐to‐face individual intervention compared with alternative support (moderate certainty).

1 finding from 1 review

Intervention not reported

Residual pleural fluid on chest X‐ray at 8 weeks · adults and adolescents with pleural TB

The intervention may leads to lower residual pleural fluid on chest X‐ray at 8 weeks (low certainty).

1 finding from 1 review

Intervention not reported

Residual pleural fluid on chest X‐ray at 24 weeks · adults and adolescents with pleural TB

The intervention may leads to lower residual pleural fluid on chest X‐ray at 24 weeks (low certainty).

1 finding from 1 review

Intervention not reported

Global state: No clinically important overall improvement (as rated by individual trials) ‐ medium term ( · People with schizophrenia and schizophrenia‐like disorders

The intervention may leads to lower global state: No clinically important overall improvement (as rated… (low certainty).

1 finding from 1 review