Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

179 questions · 205 findings · 42 reviews

No studies found 23 · 11.2%GRADE not reported 64 · 31.2%Very low 31 · 15.1%Low 51 · 24.9%Moderate 33 · 16.1%High 3 · 1.5%

Longer self‐certification vs shorter self‐certification

CBA: Average duration of sickness absence periods in days · workers
2 findings from 1 review

Longer self‐certification vs shorter self‐certification

CBA: Number of sickness absence periods per worker · workers
2 findings from 1 review

Longer self‐certification vs shorter self‐certification

CBA: Average lost work time per 100 person‐years · workers
2 findings from 1 review

Adults: higher dose/longer course vs lower dose/shorter course

Exacerbations · Adults with acute asthma

It is very uncertain whether adults: higher dose/longer course changes new exacerbation in compared with lower dose/shorter course (very low certainty).

2 findings from 1 review

Children: higher dose/longer course vs lower dose/shorter course

Exacerbations · children with acute asthma

Children: higher dose/longer course showed no clear difference in new exacerbation during compared with lower dose/shorter course (low certainty).

2 findings from 1 review

Daily chewing gum for 2 weeks or longer vs No gum chewing or control

Salivary flow rate (unstimulated) · Elderly (>60 years) and medically compromised adults with xerostomia / dry mouth

codex

1 finding from 1 review

Longer intervals (5‐15 days) (intervention) vs shorter intervals (2‐5 days) (control) between dressing changes

Catheter‐related blood stream infection · patients with a central venous catheter

Longer intervals (5‐15 days) (intervention) showed no clear difference in catheter‐related blood stream infection (CRBSI) compared with shorter intervals (2‐5 days) (control) between dressing changes (low certainty).

1 finding from 1 review

Longer intervals (5‐15 days) (intervention) vs shorter intervals (2‐5 days) (control) between dressing changes

All‐cause mortality · patients with a central venous catheter

Longer intervals (5‐15 days) (intervention) showed no clear difference in all‐cause mortality compared with shorter intervals (2‐5 days) (control) between dressing changes (low certainty).

1 finding from 1 review