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Table 2 The baseline characteristics of all cohort studies involved in this meta-analysis

From: The relationship between sleep duration and all-cause mortality in the older people: an updated and dose-response meta-analysis

Published year

First author

Gender

Sample size

Age

Men

Women

Follow up (years)

Total deaths

Men deaths

Women deaths

Exposure (h)

Ref (h)

Adjusted

HR, 95% CI

1987

Kaplan

Men, Women

4174

60–94

–

–

17

–

–

–

> 8

7–8

YES

1.02, 0.87–1.19

1987

Kaplan

Men, Women

4174

60–94

–

–

17

–

–

–

< 7

7–8

YES

1.02, 0.87–1.19

1987

Kaplan

Men, Women

4174

60–94

–

–

17

–

–

–

> 8

7–8

NO

1.02, 0.87–1.21

1987

Kaplan

Men, Women

4174

60–94

–

–

17

–

–

–

< 7

7–8

NO

1.02, 0.87–1.21

2011

Kronholm

Men, Women

1210

60–64

–

–

35

1065

–

–

≥10

7–8

NO

1.11, 1.05–1.18

2011

Kronholm

Men, Women

1210

60–64

–

–

35

1065

–

–

≤5

7–8

NO

1.07, 1.01–1.14

2008

Gangwisch

Men, Women

3983

60–86

–

–

10

1604

–

–

≥9

7

YES

1.36, 1.15–1.6

2008

Gangwisch

Men, Women

3983

60–86

–

–

10

1604

–

–

≤5

7

YES

1.27, 1.06–1.53

2008

Gangwisch

Men, Women

3983

60–86

–

–

10

1604

–

–

≥9

7

NO

1.98, 1.68–2.32

2008

Gangwisch

Men, Women

3983

60–86

–

–

10

1604

–

–

≤5

7

NO

1.72, 1.44–2.06

2013

Jung

Men

2001

60–96

889

1112

19

1224

632

592

≥9

7

YES

1.09, 0.82–1.45

2013

Jung

Women

2001

60–96

889

1112

19

1224

632

592

≥9

7

YES

1.51, 1.05–2.18

2013

Jung

Men

2001

60–96

889

1112

19

1224

632

592

≤5

7

YES

0.98, 0.67–1.43

2013

Jung

Women

2001

60–96

889

1112

19

1224

632

592

≤5

7

YES

1.11, 0.77–1.6

2013

Jung

Men

2001

60–96

889

1112

19

1224

632

592

≥9

7

NO

1.18, 0.92–1.52

2013

Jung

Women

2001

60–96

889

1112

19

1224

632

592

≥9

7

NO

1.50, 1.12–2.00

2013

Jung

Men

2001

60–96

889

1112

19

1224

632

592

≤5

7

NO

1.10, 0.79–1.55

2013

Jung

Women

2001

60–96

889

1112

19

1224

632

592

≤5

7

NO

1.07, 0.79–1.44

2019

Morgan

Men, Women

960

≥65

375

585

27

927

–

–

≥9

7

YES

1.18, 0.85–1.63

2019

Morgan

Men, Women

960

≥65

375

585

27

927

–

–

≤4

7

YES

1.08, 0.83–1.40

2019

Morgan

Men, Women

960

≥65

375

585

27

927

–

–

≥9

7

NO

1.40, 1.08–1.83

2019

Morgan

Men, Women

960

≥65

375

585

27

927

–

–

≤4

7

NO

1.02, 0.80–1.29

2009

Stone

Women

8101

≥68

0

8101

6.9

1922

0

1922

> 8

6–8

YES

1.16, 0.97–1.39

2009

Stone

Women

8101

≥68

0

8101

6.9

1922

0

1922

< 6

6–8

YES

1.02, 0.87–1.19

2009

Stone

Women

8101

≥68

0

8101

6.9

1922

0

1922

≥10

8–9

YES

1.58, 1.27–1.95

2009

Stone

Women

8101

≥68

0

8101

6.9

1922

0

1922

< 6

8–9

YES

0.95, 0.76–1.18

2003

Goto

Men

724

≥65

251

473

12

305

139

166

> 7

6–7

YES

1.54, 0.92–2.58

2003

Goto

Women

724

≥65

251

473

12

305

139

166

> 7

6–7

YES

1.40, 0.91–2.15

2003

Goto

Men

724

≥65

251

473

12

305

139

166

< 6

6–7

YES

1.29, 0.50–3.34

2003

Goto

Women

724

≥65

251

473

12

305

139

166

< 6

6–7

YES

2.62, 1.36–5.07

2003

Goto

Men

724

≥65

251

473

12

305

139

166

> 7

6–7

NO

1.62, 0.99–2.66

2003

Goto

Women

724

≥65

251

473

12

305

139

166

> 7

6–7

NO

1.60, 1.06–2.42

2003

Goto

Men

724

≥65

251

473

12

305

139

166

< 6

6–7

NO

1.42, 0.61–3.27

2003

Goto

Women

724

≥65

251

473

12

305

139

166

< 6

6–7

NO

2.65, 1.42–4.95

2012

Cohen-Mansfield

Men, Women

1166

≥75

–

–

20

1108

–

–

> 9

7–9

YES

1.32, 1.09–1.58

2012

Cohen-Mansfield

Men, Women

1166

≥75

–

–

20

1108

–

–

< 7

7–9

YES

0.98, 0.84–1.13

2012

Cohen-Mansfield

Men, Women

1166

≥75

–

–

20

1108

–

–

> 9

7–9

NO

1.29, 1.11–1.52

2012

Cohen-Mansfield

Men, Women

1166

≥75

–

–

20

1108

–

–

< 7

7–9

NO

0.81, 0.71–0.93

2013

Kim

Men, Women

–

65–69

–

–

12.9

4764

–

–

≥9

7

YES

1.25, 1.14–1.38

2013

Kim

Men, Women

–

65–69

–

–

12.9

4764

–

–

≤5

7

YES

1.13, 1.02–1.26

2013

Kim

Men, Women

–

≥70

–

–

12.9

6444

–

–

≥9

7

YES

1.14, 1.05–1.24

2013

Kim

Men, Women

–

≥70

–

–

12.9

6444

–

–

≤5

7

YES

1.09, 0.99–1.19

2001

Seki

Men, Women

1065

60–74

440

625

7.5

123

77

46

≥9

7

YES

0.97, 0.50–1.90

2001

Seki

Men, Women

1065

60–74

440

625

7.5

123

77

46

< 6

7

YES

1.74, 0.72–4.24

2001

Seki

Men, Women

1065

60–74

440

625

7.5

123

77

46

≥9

7

NO

1.00, 0.52–1.96

2001

Seki

Men, Women

1065

60–74

440

625

7.5

123

77

46

< 6

7

NO

2.17, 0.91–5.21

2007

Lan

Men

3079

≥64

1748

1331

10

1338

816

522

≥10

7–7.9

YES

1.51, 1.19–1.92

2007

Lan

Women

3079

≥64

1748

1331

10

1338

816

522

≥10

7–7.9

YES

2.06, 1.50–2.83

2007

Lan

Men

3079

≥64

1748

1331

10

1338

816

522

< 7

7–7.9

YES

0.98, 0.76–1.25

2007

Lan

Women

3079

≥64

1748

1331

10

1338

816

522

< 7

7–7.9

YES

1.14, 0.77–1.67

2007

Lan

Men

3079

≥64

1748

1331

10

1338

816

522

≥10

7–7.9

NO

1.86, 1.48–2.34

2007

Lan

Women

3079

≥64

1748

1331

10

1338

816

522

≥10

7–7.9

NO

2.49, 1.84–3.37

2007

Lan

Men

3079

≥64

1748

1331

10

1338

816

522

< 7

7–7.9

NO

0.97, 0.76–1.23

2007

Lan

Women

3079

≥64

1748

1331

10

1338

816

522

< 7

7–7.9

NO

1.04, 0.71–1.51

2013

Yeo

Men, Women

5538

≥60

–

–

9.4

1223

–

–

≥10

7

YES

1.48, 1.13–1.93

2013

Yeo

Men, Women

5538

≥60

–

–

9.4

1223

–

–

≤5

7

YES

1.23, 1.03–1.47

2013

Kakizaki

Men, Women

9690

≥70

–

–

10.8

3960

–

–

≥9

7–7.9

YES

1.33, 1.24–1.43

2013

Kakizaki

Men, Women

9690

≥70

–

–

10.8

3960

–

–

< 6

7–7.9

YES

0.98, 0.87–1.10

2011

Werle

Men, Women

187

≥80

68

119

8.7

141

56

85

> 8

7

YES

0.95, 0.89–1.02

2011

Werle

Men, Women

187

≥80

68

119

8.7

141

56

85

> 8

7

NO

0.95, 0.90–1.01

2011

Kripke

Women

355

60–81

–

–

10.5

79

–

–

≥9

7–7.9

NO

0.93, 0.37–2.35

2011

Kripke

Women

355

60–81

–

–

10.5

79

–

–

≤5

7

NO

0.83, 0.4–1.73

2017

Akersted

Men, Women

8089

≥65

3879

4210

13

2337

–

–

≥8

7

YES

1.01, 0.90–1.14

2017

Akersted

Men, Women

8089

≥65

3879

4210

13

2337

–

–

≤5

7

YES

1.05, 0.90–1.22

2017

Akersted

Men, Women

8089

≥65

3879

4210

13

2337

–

–

≥8

7

NO

1.06, 0.96–1.19

2017

Akersted

Men, Women

8089

≥65

3879

4210

13

2337

–

–

≤5

7

NO

1.02, 0.90–1.16

2011

Castro-Costa

Men, Women

1512

> 60

–

–

7.5

440

–

–

≥9

7–7.9

YES

1.56, 1.12–2.18

2011

Castro-Costa

Men, Women

1512

> 60

–

–

7.5

440

–

–

< 6

7–7.9

YES

0.88, 0.61–1.28

2011

Castro-Costa

Men, Women

1512

> 60

–

–

7.5

440

–

–

≥9

7–7.9

NO

1.84, 1.40–2.43

2011

Castro-Costa

Men, Women

1512

> 60

–

–

7.5

440

–

–

< 6

7–7.9

NO

1.01, 0.75–1.37

2013

Chen

Men, Women

4064

> 65

2269

1795

9

1004

336

668

≥9

7

YES

1.66, 1.28–2.17

2013

Chen

Men, Women

4064

> 65

2269

1795

9

1004

336

668

≤4

7

YES

1.00, 0.75–1.33

2009

Suzuki

Men, Women

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

YES

1.96, 1.49–2.57

2009

Suzuki

Men, Women

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

YES

0.92, 0.66–1.28

2009

Suzuki

Men

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

YES

1.86, 1.34–2.56

2009

Suzuki

Women

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

YES

2.27, 1.37–3.76

2009

Suzuki

Men

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

YES

1.08, 0.72–1.61

2009

Suzuki

Women

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

YES

0.71, 0.39–1.29

2009

Suzuki

Men, Women

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

NO

2.29, 1.75–3.00

2009

Suzuki

Men, Women

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

NO

1.03, 0.74–1.43

2009

Suzuki

Men

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

NO

2.16, 1.57–2.98

2009

Suzuki

Women

11,395

65–85

5825

5570

7

1004

689

315

≥10

7

NO

2.65, 1.61–4.37

2009

Suzuki

Men

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

NO

1.16, 0.78–1.73

2009

Suzuki

Women

11,395

65–85

5825

5570

7

1004

689

315

≤5

7

NO

0.82, 0.46–1.48

2014

Lee

Men

3427

> 65

1745

1682

5

297

221

76

≥10

< 10

YES

1.75, 1.09–2.81

2014

Lee

Women

3427

> 65

1745

1682

5

297

221

76

≥10

< 10

YES

2.88, 1.01–8.20

2014

Lee

Men

3427

> 65

1745

1682

5

297

221

76

≥10

< 10

NO

2.10, 1.33–3.33

2014

Lee

Women

3427

> 65

1745

1682

5

297

221

76

≥10

< 10

NO

2.70, 0.98–7.46

2018

Brostrom

Men

630

65–82

301

329

6

144

86

58

≥9

7–8

YES

1.10, 0.1–10.30

2018

Brostrom

Women

630

65–82

301

329

6

144

86

58

≥9

7–8

YES

0.35, 0.10–26.90

2018

Brostrom

Men

630

65–82

301

329

6

144

86

58

≤6

7–8

YES

0.60, 0.10–2.90

2018

Brostrom

Women

630

65–82

301

329

6

144

86

58

≤6

7–8

YES

0.34, 0.10–1.90

2016

Smagula

Men

2531

≥65

2531

0

7.4

628

628

0

> 8

5–8

YES

0.83, 0.71–1.31

2016

Smagula

Men

2531

≥65

2531

0

7.4

628

628

0

< 5

5–8

YES

1.12, 0.89–1.42

2016

Smagula

Men

2531

≥65

2531

0

7.4

628

628

0

> 8

5–8

NO

1.02, 0.76–1.37

2016

Smagula

Men

2531

≥65

2531

0

7.4

628

628

0

< 5

5–8

NO

1.28, 1.02–1.62

2015

Zuurbier

Men, Women

1073

60–98

–

–

7.3

142

–

–

> 7.5

6–7.5

YES

1.24, 0.73–2.10

2015

Zuurbier

Men, Women

1073

60–98

–

–

7.3

142

–

–

< 6

6–7.5

YES

1.12, 0.75–1.68

2011

Qiu

Men, Women

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

YES

1.09, 1.00–1.180

2011

Qiu

Men, Women

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

YES

0.97, 0.88–1.08

2011

Qiu

Men

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

YES

1.22, 1.08–1.38

2011

Qiu

Women

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

YES

1.00, 0.90–1.11

2011

Qiu

Men

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

YES

1.17, 1.01–1.38

2011

Qiu

Women

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

YES

0.85, 0.75–0.98

2011

Qiu

Men, Women

12,671

65–79

5421

7250

3

5199

2067

3132

≥10

8

YES

1.17, 0.88–1.54

2011

Qiu

Men, Women

12,671

65–79

5421

7250

3

5199

2067

3132

≤5

8

YES

1.00, 0.74–1.35

2011

Qiu

Men, Women

12,671

≥80

5421

7250

3

5199

2067

3132

≥10

8

YES

1.08, 0.99–1.18

2011

Qiu

Men, Women

12,671

≥80

5421

7250

3

5199

2067

3132

≤5

8

YES

0.97, 0.87–1.08

2011

Qiu

Men, Women

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

NO

1.22, 1.13–1.32

2011

Qiu

Men, Women

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

NO

1.19, 1.08–1.32

2011

Qiu

Men

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

NO

1.36, 1.20–1.54

2011

Qiu

Women

12,671

≥65

5421

7250

3

5199

2067

3132

≥10

8

NO

1.12, 1.02–1.25

2011

Qiu

Men

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

NO

1.47, 1.26–1.71

2011

Qiu

Women

12,671

≥65

5421

7250

3

5199

2067

3132

≤5

8

NO

1.03, 0.90–1.17

2011

Qiu

Men, Women

12,671

65–79

5421

7250

3

5199

2067

3132

≥10

8

NO

1.46, 1.11–1.91

2011

Qiu

Men, Women

12,671

65–79

5421

7250

3

5199

2067

3132

≤5

8

NO

1.32, 0.98–1.77

2011

Qiu

Men, Women

12,671

≥80

5421

7250

3

5199

2067

3132

≥10

8

NO

1.21, 1.12–1.32

2011

Qiu

Men, Women

12,671

≥80

5421

7250

3

5199

2067

3132

≤5

8

NO

1.18, 1.06–1.31

2017

Beydoun

Men, Women

2173

≥65

–

–

4.5

–

–

–

> 8

7–8

YES

1.30, 0.73–2.29

2017

Beydoun

Men, Women

2173

≥65

–

–

4.5

–

–

–

< 7

7–8

YES

0.96, 0.68–1.35

2017

Beydoun

Men, Women

2173

≥65

–

–

4.5

–

–

–

> 8

7–8

NO

1.90, 1.44–2.50

2017

Beydoun

Men, Women

2173

≥65

–

–

4.5

–

–

–

< 7

7–8

NO

1.20, 0.94–1.52

2018

Cheng

Men, Women

2448

≥60

1167

1281

4

274

–

–

≥9

7–8

YES

2.24, 1.05–4.77

2018

Cheng

Men, Women

2448

≥60

1167

1281

4

274

–

–

≤6

7–8

YES

2.14, 1.12–4.11

2018

Cheng

Men, Women

2448

≥60

1167

1281

4

274

–

–

≥9

7–8

NO

2.87, 1.36–6.05

2018

Cheng

Men, Women

2448

≥60

1167

1281

4

274

–

–

≤6

7–8

NO

2.69, 1.44–5.03

2015

Hall

Men, Women

3013

≥70

1463

1550

8.2

953

–

–

> 8

7

YES

1.23, 0.93–1.63

2015

Hall

Men, Women

3013

≥70

1463

1550

8.2

953

–

–

< 6

7

YES

1.06, 0.83–1.34

2015

Hall

Men, Women

3013

≥70

1463

1550

8.2

953

–

–

> 8

7

NO

1.49, 1.15–1.93

2015

Hall

Men, Women

3013

≥70

1463

1550

8.2

953

–

–

< 6

7

NO

1.30, 1.05–1.61

2019

Akersted

Men, Women

–

≥65

–

–

13

–

–

–

≥9

7

YES

0.99, 0.84–1.09

2019

Akersted

Men, Women

–

≥65

–

–

13

–

–

–

≤4

7

YES

0.97, 0.81–1.18

2019

Akersted

Men, Women

–

≥65

–

–

13

–

–

–

≥9

7

YES

0.91, 0.66–1.25

  1. Abbreviations: Ref, reference; HR, hazard ratio; 95% CI, 95% confidence interval