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Table 1 Correlation between daily growth of confirmed cases (DGCC) across China and values of Baidu index (BI)

From: Using Baidu search values to monitor and predict the confirmed cases of COVID-19 in China: – evidence from Baidu index

Region

Values of BI

Fever

Cough

Fatigue

Sputum production

Shortness of breath

China

rs

0.768

0.556

0.763

0.665

0.780

p

8.013 × 10− 23

1.087 × 10− 9

7.930 × 10− 21

1.793 × 10− 14

2.673 × 10−22

Anhui

rs

0.801

0.770

0.760

− 0.028

0.775

p

5.39 × 1024

3.131 × 10− 21

2.172 × 10− 20

0.782

1.205 × 10− 21

Beijing

rs

0.657

0.431

0.582

0.249

0.610

p

6.336 × 10−14

6.502 × 10− 6

1.358 × 10−10

0.012

1.040 × 10− 11

Chongqing

rs

0.796

0.769

0.740

0.572

0.738

p

1.542 × 10−23

1.647 × 10− 23

6.057 × 10− 19

3.389 × 10− 10

8.809 × 10− 19

Fujian

rs

0.588

0.471

0.705

0.367

0.537

p

8.473 × 10− 11

5.677 × 10− 7

1.388 × 10− 16

1.485 × 10− 4

5.809 × 10− 9

Gansu

rs

0.527

0.444

0.373

− 0.150

0.484

p

1.277 × 10− 8

3.008 × 10− 6

1.112 × 10− 4

0.133

2.586 × 10− 7

Guangdong

rs

0.535

0.336

0.527

0.262

0.506

p

7.113 × 10−9

1.564 × 10− 4

1.287 × 10− 8

0.008

5.598 × 10− 8

Guangxi

rs

0.766

0.754

0.760

0.287

0.731

p

7.075 × 10−21

5.780 × 10−20

1.904 × 10− 20

0.004

6.872 × 10− 8

Guizhou

rs

0.673

0.657

0.622

0.355

0.629

p

9.182 × 10− 15

6.433 × 10− 14

2.921 × 10− 12

2.555 × 10− 4

1.388 × 10− 12

Hainan

rs

0.717

0.735

0.694

−0.354

0.693

p

2.474 × 10− 17

1.468 × 10− 18

6.080 × 10− 16

2.673 × 10− 4

6.597 × 10− 16

Hebei

rs

0.731

0.635

0.662

0.040

0.705

p

2.622 × 10−18

7.392 × 10− 13

3.396 × 10− 14

0.691

1.297 × 10− 16

Heilongjiang

rs

0.413

0.201

0.453

0.089

0.345

p

1.590 × 10− 5

0.042

1.710 × 10− 6

0.375

2.669 × 10− 4

Henan

rs

0.771

0.766

0.728

0.655

0.759

p

2.652 × 10− 21

6.291 × 10− 21

4.647 × 10− 18

7.887 × 10− 14

2.288 × 10− 20

Hong Kong

rs

− 0.094

− 0.514

− 0.282

0.517

− 0.085

p

0.349

3.394 × 10− 8

0.004

2.676 × 10− 8

0.398

Hubei

rs

0.709

0.745

0.631

0.614

0.704

p

7.410 × 10− 17

2693 × 10− 19

1.131 × 10− 12

6.640 × 10− 12

1.640 × 10− 16

Hunan

rs

0.813

0.797

0.738

−0.244

0.759

p

2.942 × 10− 25

1.256 × 10− 23

9.111 × 10− 19

0.014

2.300 × 10− 20

Inner Mongolia

rs

0.322

0.129

0.369

0.385

0.316

p

0.001

0.197

1.384 × 10− 4

6.326 × 10− 5

0.001

Jiangsu

rs

0.695

0.565

0.629

0.502

0.630

p

5.378 × 10− 16

5.918 × 10− 10

1.441 × 10− 12

7.609 × 10− 8

1.306 × 10− 12

Jiangxi

rs

0.692

0.672

0.686

− 0.317

0.640

p

7.678 × 10− 16

1.052 × 10− 14

1.861 × 10− 15

0.001

4.433 × 10− 13

Jilin

rs

0.538

0.446

0.626

0.323

0.355

p

5.415 × 10− 9

2.646 × 10− 6

1.925 × 10− 12

0.001

2.472 × 10− 4

Liaoning

rs

0.575

0.425

0.486

− 0.221

0.513

p

2.685 × 10− 10

8.698 × 10− 6

2.179 × 10− 7

0.026

3.436 × 10− 8

Macau

rs

0.105

0.016

0.093

0.204

0.015

p

0.293

0.872

0.354

0.040

0.882

Ningxia

rs

0.696

0.649

0.541

−0.389

0.503

p

4.495 × 10−16

1.656 × 10−13

4.279 × 10−9

5.317 × 10−5

7.051 × 10−8

Qinghai

rs

0.461

0.465

0.428

0.297

0.396

p

1.115 × 10−6

8.234 × 10−7

7.029 × 10− 6

0.002

3.833 × 10−5

Shaanxi

rs

0.637

0.607

0.606

− 0.157

0.670

p

5.969 × 10−13

1.319 × 10−11

1.494 × 10− 11

0.115

1.406 × 10−14

Shandong

rs

0.706

0.584

0.702

0.528

0.708

p

1.230 × 10−16

1.217 × 10−10

2.135 × 10− 16

5.238 × 10−7

9.317 × 10−17

ShanghaiShanghai

rs

0.331

0.133

0.379

− 0.020

0.391

p

0.001

0.184

8.633 × 10−5

0.841

4.810 × 10− 5

Shanxi

rs

0.380

0.275

0.313

0.001

0.365

p

8.102 × 10−5

0.005

0.001

0.991

2.382 × 10−4

Sichuan

rs

0.775

0.687

0.720

0.681

0.771

p

1.247 × 10−21

1.565 × 10−15

1.588 × 10−17

3.530 × 10− 15

2.517 × 10− 21

Tianjin

rs

0.483

0.424

0.517

0.295

0.453

p

2.675 × 10−7

9.050 × 10−6

2.624 × 10−8

0.003

1.755 × 10− 6

Tibet

rs

0.167

0.139

0.173

−0.003

0.043

p

0.093

0.165

0.082

0.973

0.670

Xinjiang

rs

0.737

0.704

0.593

−0.284

0.504

p

9.948 × 10−19

1.642 × 10−16

4.944 × 10−11

0.004

6.872 × 10−8

Yunnan

rs

0.689

0.616

0.635

−0.340

0.638

p

1.274 × 10−15

5.308 × 10−12

7.636 × 10−13

4.776 × 10−14

5.252 × 10−13

Zhejiang

rs

0.592

0.530

0.628

0.349

0.618

p

5.553 × 10−11

1.026 × 10−8

1.569 × 10−12

3.250 × 10−4

4.461 × 10− 12

Taiwan

rs

−0.111

− 0.428

−0.242

0.523

−0.019

p

0.269

7.105 × 10−6

0.014

1.699 × 10− 8

0.854