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Evidence found and GRADE certainty

2,539 questions · 2,602 findings · 424 reviews · Headline outcomes only

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No studies found 572 · 22%GRADE not reported 189 · 7.3%Very low 527 · 20.3%Low 685 · 26.3%Moderate 514 · 19.8%High 115 · 4.4%

Tiotropium vs long‐acting beta‐agonists

Mortality (all‐cause) · patients with stable chronic obstructive pulmonary disease and > 10 pack years smoking history

It is very uncertain whether tiotropium changes mortality (all‐cause) compared with long‐acting beta‐agonists (very low certainty).

1 finding from 1 review

Intervention not reported

Number of participants with increased cough · patients with prolonged non‐specific cough in children

The intervention showed no clear difference in number of participants with increased cough (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

The proportion of pressure ulcers healed · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

Summary of findings table ‐ Energy, protein and micronutrients may leads to higher pressure ulcers healed compared with standard diet (low certainty).

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Time to complete healing of pressure ulcers ‐ not reported · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Change in area/depth/volume of pressure ulcers ‐ not reported · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Acceptability of nutritional supplements ‐ not reported · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Gastrointestinal adverse events · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

It is very uncertain whether summary of findings table ‐ Energy, protein and micronutrients changes side effects: at least one adverse gastrointestinal event compared with standard diet (very low certainty).

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Health‐related quality of life ‐ not reported · long‐term care patients; inpatients without dehydration with energy intake by tube feeding; patients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Protein, arginine, zinc and antioxidants vs standard diet or placebo

The proportion of pressure ulcers healed · residents of long‐term care (≥ 65 years) with pressure ulcers; inpatients with pressure ulcers

It is very uncertain whether summary of findings table ‐ Protein, arginine, zinc and antioxidants changes pressure ulcers healed compared with standard diet or placebo (very low certainty).

1 finding from 1 review

Summary of findings table ‐ Protein, arginine, zinc and antioxidants vs standard diet or placebo

Time to complete healing of pressure ulcers ‐ not reported · residents of long‐term care (≥ 65 years) with pressure ulcers; inpatients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Protein, arginine, zinc and antioxidants vs standard diet or placebo

Acceptability of nutritional supplements ‐ not reported · residents of long‐term care (≥ 65 years) with pressure ulcers; inpatients with pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings table ‐ Protein, arginine, zinc and antioxidants vs standard diet or placebo

Gastrointestinal adverse events · residents of long‐term care (≥ 65 years) with pressure ulcers; inpatients with pressure ulcers

It is very uncertain whether summary of findings table ‐ Protein, arginine, zinc and antioxidants changes side effects: at least one adverse gastrointestinal event compared with standard diet or placebo (very low certainty).

1 finding from 1 review

Condiments/seasonings fortified with iron vs unfortified condiments/seasonings

Anaemia · population aged 2 years and above (Ballot 1989a (C) ‐ > 10 years, Chen 2005 (C) ‐ >3 years; Huo 2002 ‐ 11‐17 years, Longfils 2008‐ 6‐21…

It is very uncertain whether condiments/seasonings fortified with iron changes anaemia (defined as haemoglobin below WHO cut‐off for age and… compared with unfortified condiments/seasonings (very low certainty).

1 finding from 1 review

Condiments/seasonings fortified with iron vs unfortified condiments/seasonings

Iron deficiency (as defined by study authors, based on a biomarker of iron status) · population aged 2 years and above (Ballot 1989a (C) ‐ > 10 years, Chen 2005 (C) ‐ >3 years; Huo 2002 ‐ 11‐17 years, Longfils 2008‐ 6‐21…

Condiments/seasonings fortified with iron showed no clear difference in iron deficiency (as defined by the trialists based on a biomarker of… compared with unfortified condiments/seasonings (moderate certainty).

1 finding from 1 review