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Table 2 Cross-correlation results for Australia

From: Use of big data in the surveillance of veterinary diseases: early detection of tick paralysis in companion animals

 

(−) Values: Google searches lag notifications

 

(+) Values: notifications lag Google searches

Search terms

–4

–3

–2

–1

0

1

2

3

4

Paralysis tickb

–0.388

–0.116

0.264

0.652

0.899

0.86

0.56

0.132

–0.261

Tick paralysisb

–0.381

–0.126

0.24

0.632

0.871

0.82

0.511

0.077

–0.313

Ticksb

–0.428

–0.207

0.18

0.616

0.847

0.795

0.507

0.187

–0.095

Tickb

–0.322

–0.084

0.276

0.649

0.814

0.685

0.36

0.006

–0.267

Paralysis ticksb

–0.363

–0.121

0.239

0.575

0.786

0.729

0.49

0.209

–0.065

Dog ticka

–0.474

–0.299

0.052

0.459

0.756

0.829

0.637

0.326

–0.021

Dogs ticksa

–0.554

–0.375

–0.055

0.357

0.641

0.785

0.724

0.493

0.177

Removing ticksa

–0.577

–0.437

–0.129

0.212

0.475

0.547

0.476

0.322

0.128

Dog ticksa

–0.527

–0.362

–0.07

0.286

0.607

0.758

0.624

0.346

–0.011

Remove ticka

–0.394

–0.284

–0.082

0.186

0.426

0.545

0.473

0.279

0.008

Cat ticka

–0.125

0.183

0.44

0.62

0.692

0.582

0.268

–0.087

–0.355

Paralysis tick dogsa

–0.405

–0.184

0.194

0.589

0.864

0.837

0.579

0.23

–0.109

Dog paralysis ticka

–0.44

–0.261

0.092

0.523

0.836

0.864

0.562

0.138

–0.234

Paralysis tick doga

–0.429

–0.282

–0.002

0.414

0.746

0.844

0.637

0.239

–0.145

Cats ticksa

–0.053

0.229

0.497

0.694

0.677

0.472

0.177

–0.088

–0.253

Tick on doga

–0.436

–0.332

–0.117

0.198

0.515

0.681

0.649

0.419

0.121

Paralysis tick symptomsa

–0.354

–0.134

0.222

0.598

0.807

0.721

0.425

0.065

–0.253

Confidence Limits

±0.354

±0.348

±0.342

±0.338

±0.334

±0.338

±0.342

±0.348

±0.354

  1. The cross-correlation values are shown only for the search terms that were strongly (a) or very strongly (b) significant (Spearman’s rho ≥ 0.6). Significant positive cross-correlation values, i.e. above the upper confidence limit, are in italic, and highest values (i.e. for which the two times series are best aligned) are in bold