Findings

What do systematic reviews say?

4,811 questions · 70,850 findings · 5,139 reviews

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No studies found 15,174 · 21.4%GRADE not reported 6,479 · 9.1%Very low 17,330 · 24.5%Low 17,814 · 25.1%Moderate 11,056 · 15.6%High 2,997 · 4.2%

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Summary of findings table ‐ Forward rotation vs backward rotation

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
62 participants
Very low

Summary of findings table ‐ Shift duration of no more than 16 hours vs shift duration of 24 to 28 hours

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
2 studies · 760 participants
Low

Summary of findings table ‐ Shift duration of no more than 16 hours vs shift duration of 24 to 28 hours

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
2 studies · 716 participants
Moderate

Summary of findings table ‐ Shift duration of no more than 16 hours vs shift duration of 24 to 28 hours

Number of hours worked · 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
1 study · 318 participants
Very low

Summary of findings table ‐ Shift duration of no more than 16 hours vs shift duration of 24 to 28 hours

Other secondary outcomes (number of staff; overtime; 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

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

Summary of findings table ‐ More compressed schedules vs less compressed schedules

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
25 participants
Very low

Summary of findings table ‐ Forward rotation vs backward rotation

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
62 participants
Very low

Summary of findings table ‐ More compressed schedules vs less compressed schedules

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
30 participants
Very low

Summary of findings table ‐ More compressed schedules vs less compressed schedules

Sleepiness during shifts · 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

Summary of findings table ‐ More compressed schedules vs less compressed schedules

Secondary outcomes (number of staff; number of hours worked; overtime; 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

Summary of findings table ‐ Forward rotation vs backward rotation

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
62 participants
Very low

Summary of findings table ‐ Forward rotation vs backward rotation

Secondary outcomes (number of staff; number of hours worked; overtime; 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

Summary of findings table ‐ Faster rotation vs slower rotation

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
282 participants
Low

Summary of findings table ‐ Faster rotation vs slower rotation

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
282 participants
Very low

Summary of findings table ‐ Faster rotation vs slower rotation

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
62 participants
Very low