Findings

What do systematic reviews say?

9 questions · 12 findings · 2 reviews · Work · Headline outcomes only

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No studies found 1 · 8.3%GRADE not reported 0 · 0%Very low 7 · 58.3%Low 4 · 33.3%Moderate 0 · 0%High 0 · 0%

Longer self‐certification vs shorter self‐certification

CBA: Average duration of sickness absence periods in days · workers

2 findings from 1 review

Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 237391 participants
Low
Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 1869 participants
Very low

Longer self‐certification vs shorter self‐certification

CBA: Number of sickness absence periods per worker · workers

2 findings from 1 review

Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 237391 participants
Low
Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 1869 participants
Very low

Longer self‐certification vs shorter self‐certification

CBA: Average lost work time per 100 person‐years · workers

2 findings from 1 review

Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 237391 participants
Low
Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 17114 participants
Very low

Longer self‐certification vs shorter self‐certification

RCT: Costs of sickness absence and physician certification · workers

1 finding from 1 review

Self‐certification versus physician certification of sick leave for reducing sickness absence and associated costs 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 237391 participants
Low

Summary of findings table ‐ Shorter shifts (8 or 10 hours) vs shifts lasting 2 to 3 hours longer

Quality of sleep · Shift workers

1 finding from 1 review

Adapting shift work schedules for sleep quality, sleep duration, and sleepiness in shift workers 2023 · Cochrane Headline outcomes only
no estimate extracted
111 participants
Very low

Summary of findings table ‐ Shorter shifts (8 or 10 hours) vs shifts lasting 2 to 3 hours longer

Sleep length off‐shift · Shift workers

1 finding from 1 review

Adapting shift work schedules for sleep quality, sleep duration, and sleepiness in shift workers 2023 · Cochrane Headline outcomes only
no estimate extracted
121 participants
Very low

Summary of findings table ‐ Shorter shifts (8 or 10 hours) vs shifts lasting 2 to 3 hours longer

Sleepiness during shifts · Shift workers

1 finding from 1 review

Adapting shift work schedules for sleep quality, sleep duration, and sleepiness in shift workers 2023 · Cochrane Headline outcomes only
no estimate extracted
121 participants
Very low

Summary of findings table ‐ Shorter shifts (8 or 10 hours) vs shifts lasting 2 to 3 hours longer

Overtime · Shift workers

1 finding from 1 review

Adapting shift work schedules for sleep quality, sleep duration, and sleepiness in shift workers 2023 · Cochrane Headline outcomes only
no estimate extracted
59 participants
Very low

Summary of findings table ‐ Shorter shifts (8 or 10 hours) vs shifts lasting 2 to 3 hours longer

Other secondary outcomes (number of staff; number of hours worked; staff costs) · Shift workers

The review found no eligible studies for this question.

1 finding from 1 review

Adapting shift work schedules for sleep quality, sleep duration, and sleepiness in shift workers 2023 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found