The impact of waiting time on health gains from surgery: Evidence from a national patient reported outcomes dataset Running title


Table 2: Regression of waiting times on time-invariant and time-defined variables



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Table 2: Regression of waiting times on time-invariant and time-defined variables



















Hip

Knee

VV

Hernia

Female

0.0998

0.1445*

0.1843

-0.1780

Age

0.2631*

0.0952

-0.0139

0.0950

Age2

-0.0046*

-0.0020

0.0009

-0.0014

Age3

0.0000*

0.0000

-0.0000

0.0000
















Living arrangements













Alone

0.1068

-0.1222

0.5449**

0.1056

Nursing home, hospital

-0.2128

0.6366

-0.6834

0.5968

Other

0.0157

-0.6633

-0.3449

-0.7862
















Length of symptoms













1–5 years

0.9801***

0.8681***

0.4345

0.8773***

6-10 years

1.1775***

0.9372***

0.4153

-

>10 years

1.5096***

0.9566***

0.4643

-
















Previous surgery

0.2577

0.0567

0.4125**

-0.4711***

Heart disease

0.1943

0.3845***

0.2241

0.3960**

High blood pressure

0.0576

-0.0288

0.0607

0.1661*

Stroke

0.2043

0.5688*

-0.0877

-0.431

Circulation

0.0722

0.2388

0.0075

0.3229

Lung disease

0.3220*

0.2336

0.1482

0.2662

Diabetes

0.0409

0.0861

-0.2521

-0.2478

Kidney disease

0.0944

0.5398*

0.0779

0.0758

Nervous system

-0.2970

0.4292

-0.8330

-0.6197

Liver disease

1.5669*

-0.3542

-0.0065

0.4842

Cancer

-0.0884

-0.1140

0.0354

0.0291

Depression

-0.0942

-0.3127*

-0.4722

-0.1458

Arthritis

0.1635*

-0.0694

-0.2723

-0.0552

No disability

0.1808*

-0.0018

0.2896

-0.0418
















Income deprivation

1.7469*

1.2099

-1.0849

-0.8851

Education deprivation

-0.0065

-0.0077

-0.0034

0.0033

 













N

22687

24842

8525

21422

Adjusted R2

0.2461

0.2415

0.1635

0.1874

Notes: *** p<0.001, ** p<0.01, * p<0.05.


Table 3: Coefficients on waiting times from the OLS regression of post-surgery health outcomes





Hip Replacement

Knee Replacement

Varicose Veins

Hernia repair

EQ-5D index

-0.0620**

-0.0587**

0.0247

0.0066

EQ-VAS

-0.0488*

-0.0646**

-0.0074

0.0160

Oxford Hip Score

-0.0951***










Oxford Knee Score




-0.0385***







Aberdeen Varicose Vein Score







0.0195




Notes: *** p<0.001, ** p<0.01, * p<0.05. To obtain coefficients on similar scales across measures, we have multiplied the EQ-5D index scores by 100 and rescaled the disease-specific scores to run from zero (worst state) to 100 (best state).

Table 4: Coefficients on other covariates from the OLS regression of post-surgery health outcomes




Hip

Knee

VV

Hernia




EQ-5D index

EQ-VAS

OHS

EQ-5D index

EQ-VAS

OKS

EQ-5D index

EQ-VAS

VV

EQ-5D index

EQ-VAS





































Female

-1.0790***

-0.4004

-1.8662***

-0.0671

-0.7093**

-0.2795*

-1.0980***

-0.1128

1.3274***

-0.6703*

0.2449

Age

-0.4843

-0.4222

0.1268

-0.8070

-2.0144*

-0.1536

-0.1661

-0.1474

-0.0332

-0.7191***

-0.3421*

Age2

0.0113

0.0090

0.0011

0.0216

0.0392**

0.0071

0.0049

0.0033

-0.0000

0.0147***

0.0067*

Age3

-0.0001*

-0.0001

-0.0000

-0.0001*

-0.0002**

-0.0001

-0.0000

-0.0000

0.0000

-0.0001***

-0.0000*

EQ-VAS




0.0950***







0.1447***




0.2217***




0.2816***




Oxford Hip Score







0.1807***

























Oxford Knee Score
















0.2969***













Aberdeen VV score

























0.4870***




General health

.

.

.

























very good

-1.7047***

-4.5459***

-1.9914***

-1.1656*

-2.8331***

-1.0581**

-0.5559

-3.9449***

0.8147**

-1.0967***

-4.3883***

good

-3.6377***

-9.2819***

-4.7255***

-3.0325***

-8.0839***

-2.3696***

-1.9164***

-9.7232***

1.4360***

-2.6058***

-9.3961***

fair

-7.6658***

-16.7913***

-9.3636***

-6.8585***

-14.6396***

-4.2612***

-4.7753***

-17.2299***

3.1715***

-6.8305***

-17.5233***

poor

-11.2090***

-20.8920***

-11.5743***

-11.4897***

-20.5751***

-6.0205***

-7.3973***

-21.9318***

4.1051**

-13.8488***

-24.6808***

Self –care

.

.

.

























some problems

-2.8991***

-1.2410***

-2.1828***

-5.5492***

-3.9094***

-2.2372***

-11.5141***

-5.9064***

1.4455

-8.5704***

-3.0043***

unable

-11.8124***

-3.5864*

-9.5033***

-12.4958***

-2.7844

-2.3080*

-18.8072

-5.5422

-1.1559

-8.2578

-1.0554

Mobility

.

.

.

.

.

.

.

.

.

.

.

some problems

-0.0509

-0.2474

1.4544**

-0.2070

0.0672

0.6287**

-3.8612***

-1.7223***

-0.0359

-2.4967***

-1.0969***

unable

0.6358

0.5046

-0.3975

-9.3029**

-5.6524*

-0.3554

2.8927

6.8707*

0.3750

-2.1768

-5.0428

Pain/discomfort

.

.

.

.

.

.

.

.

.

.

.

moderate

-0.0527

2.4696*

0.8403

-0.8047

2.2959*

0.8276

-4.8668***

0.2425

-0.2562

-0.7998

0.0353

extreme

-2.0830

1.1747

0.5962

-4.5570*

0.9753

1.0966*

-19.1383***

-0.8965

2.0420**

-1.9628

-0.3405

Anxiety/depression

.

.

.

.

.

.

.

.

.

.

.

moderate

-2.2654***

-1.4132***

-1.4509***

-2.8156***

-1.4610***

-0.8812***

-3.5697***

-1.5956***

0.4315

-1.9219***

-1.1615***

extreme

-5.7290***

-2.1768**

-3.7324***

-7.4718***

-3.1475***

-2.4034***

-11.5914**

-2.9553

-0.4369

-5.3244*

-2.4446

Usual activity

.

.

.

.

.

.

.

.

.

.

.

some

-0.2599

0.0971

1.6382**

-1.4717***

-0.6914

0.2428

-1.5877**

0.0684

-0.4504

-0.6823*

0.2168

unable

-3.6047***

-1.5463*

-0.2624

-5.9390***

-3.4210***

-0.6865*

-9.0721**

-0.2693

-1.3554

-1.8386

0.2434

Living arrangements

.

.

.

























alone

0.2695

0.1425

-0.2541

-0.1432

-0.2866

-0.0929

-1.5314***

-0.9561*

0.8480**

-0.8041***

-0.9145***

nursing home, hospital

-1.7616

-4.5917

-4.1824

-5.8958

-1.2162

-2.5328

-3.9739*

-2.6378

6.0044***

-1.3302

-6.0960

other

-1.9509

-0.7780

-1.6955

-2.9014

-1.5336

-1.0979

-1.1249

-1.3953

0.5200

1.1698

1.6526

Length of symptoms

.

.

.

























1–5 years

0.2611

0.2081

-0.2173

-0.6751

-0.2820

-0.4308

-0.7615

0.0425

-1.3450

0.0120

-0.2330

6-10 years

-1.6393

-4.5116

-3.8878

-0.3031

-0.1035

0.1295

-1.0049

0.0959

-1.2456

.

.

>10 years

-0.9720

-0.3562

-1.3470

-0.6071

-0.5194

-0.0766

-1.8384*

-0.4729

-0.7383

.

.

Previous surgery

-5.1801***

-3.5853***

-9.2586***

-4.7056***

-3.6072***

-4.0602***

-1.3014***

-0.8161*

2.2459***

0.5619*

0.6512*

Heart disease

-0.7627*

-1.7502***

-0.8444

-0.9832**

-2.0632***

-0.3960

0.9241

0.2430

-0.4865

-0.3968

-1.9350***

High blood pressure

0.5138*

0.0342

0.6560*

0.1304

0.1463

0.2941*

-0.4286

-0.6640

0.0797

0.1837

0.0802

Stroke

-1.3142

-1.7101

-1.4793

-1.6562

-1.9591*

-0.3362

-4.1775

0.5439

0.5970

0.0580

-0.3332

Circulation

-2.5214***

-2.4393***

-4.6156***

-2.1607***

-1.7477***

-2.1391***

-1.2984**

-1.6178**

1.1457***

-2.4431***

-1.5866**

Lung disease

-0.4224

-2.4676***

-0.3402

-0.4306

-2.0936***

-0.0056

0.2160

-2.0730*

0.7421

0.7003*

-1.9447***

Diabetes

-1.0519**

-1.4972***

-1.5615***

-0.5554

-0.5281

-0.7396***

-0.6908

0.0570

0.2810

0.4909

-0.9271*

Kidney disease

-0.2341

-0.7321

0.5737

1.8987*

-0.8442

1.3903**

-1.2518

-3.6375

-1.3452

-0.9015

0.9835

Nervous system

-2.1917

-4.1839**

-2.3885

-4.5652***

-7.3052***

-0.9638

3.3122

-1.8991

0.5892

-3.0584**

-3.9723**

Liver disease

-4.5361*

-4.3283*

-4.3735

-1.1691

-2.7816

-1.7162*

6.2649**

5.4478

-0.1883

1.5406

1.2524

Cancer

-0.2258

-1.4442*

0.7376

-0.1197

-1.2961*

-0.1559

-2.0808*

-1.4772

0.9915

0.2047

-1.4811**

Depression

-6.4887***

-4.7375***

-4.0938***

-4.8615***

-2.7926***

-0.8871***

-3.1017***

-0.9850

0.3175

-4.5456***

-2.2052***

Arthritis

-1.1247***

-1.2533***

-0.5938*

-0.3423

-0.3281

0.1667

-1.8340***

-1.7286***

-0.6260*

-2.5575***

-1.4169***





































Income deprivation

-6.1645*

-5.4363

-6.7787*

-2.8592

-4.0242

-3.6618**

-2.8272

-5.4252

1.1884

-5.6321**

-6.3056**

Education deprivation

-0.0209

-0.0103

-0.0498**

-0.0363**

-0.0139

-0.0208**

0.0002

0.0156

-0.0058

0.0115

0.0210





































N

18842

18719

19783

20504

20428

21260

7253

7332

7395

18413

18571

Adjusted R2

0.2473

0.2710

0.2522

0.2742

0.3196

0.2727

0.3826

0.4068

0.3771

0.3440

0.4398


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