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Table 2 Length of stay estimates with predictor variables for AFT and TC methods. Sample sizes differ due to the inclusion of censored observations in the AFT method

From: Hospital length of stay for COVID-19 patients: Data-driven methods for forward planning

   

AFT model

TC model

Trajectory

Age

Weeks

Mean

SD

N

Mean

SD

N

Hospital admission to outcome (no ICU)

1 to 49

12 to 14

4.9

4.8

146

5.1

6.5

146

  

15 to 20

3.7

3.6

210

3.6

4.1

210

 

50 to 64

12 to 14

7.3

7.2

223

7.0

7.4

223

  

15 to 20

5.6

5.4

304

5.9

5.9

304

 

65 to 74

12 to 14

10.6

10.4

204

11.0

10.5

204

  

15 to 20

8.1

7.9

270

8.3

7.7

266

 

75 +

12 to 14

11.7

11.4

609

11.7

10.9

607

  

15 to 20

8.8

8.6

839

10.0

9.4

834

Hospital admission to outcome (via ICU)

1 to 49

12 to 14

17.5

12.5

312

17.5

11.8

312

  

15 to 20

14.3

10.5

267

17.8

14.0

262

 

50 to 64

12 to 14

18.8

13.4

641

19.5

14.3

626

  

15 to 20

15.7

11.5

467

17.0

12.1

455

 

65 to 74

12 to 14

16.8

12.0

391

17.1

13.5

388

  

15 to 20

13.9

10.2

225

14.9

10.2

223

 

75 +

12 to 14

13.3

9.5

161

12.6

10.8

161

  

15 to 20

10.2

7.6

91

11.3

8.9

90

ICU entry to ICU exit

1 to 49

12 to 14

13.0

12.8

239

13.2

14.0

239

  

15 to 20

10.0

10.0

210

12.7

14.5

210

 

50 to 64

12 to 14

15.4

15.2

468

15.4

14.2

468

  

15 to 20

12.0

12.0

337

13.6

13.8

337

 

65 to 74

12 to 14

13.6

13.4

237

13.6

12.5

237

  

15 to 20

10.4

10.4

152

11.4

11.4

152

 

75 +

12 to 14

7.6

7.5

109

8.1

8.9

109

  

15 to 20

5.5

5.6

57

5.0

5.9

57

Hospital admission to ICU entry

1 to 49

12 to 14

2.0

2.6

340

1.9

2.5

340

  

15 to 20

1.7

2.3

336

1.8

2.4

336

 

50 to 64

12 to 14

2.2

2.9

732

2.4

3.3

732

  

15 to 20

2.0

2.7

610

1.8

2.2

610

 

65 to 74

12 to 14

2.2

2.9

421

2.1

2.9

421

  

15 to 20

1.9

2.6

276

1.9

2.4

276

 

75 +

12 to 14

2.4

3.1

168

1.9

2.4

168

  

15 to 20

2.1

2.8

100

2.6

3.2

100

  1. Source: own elaboration using CHESS data for England