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Table 3 Cross-correlation results for the states of QLD and NSW

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

QLD

         

Paralysis tickb

–0.304

–0.173

0.073

0.445

0.738

0.705

0.391

–0.018

–0.351

Tick paralysisb

–0.299

–0.106

0.161

0.492

0.733

0.698

0.445

0.091

–0.22

Ticksb

–0.282

–0.206

0.014

0.411

0.719

0.723

0.453

0.097

–0.233

Tickb

–0.235

–0.121

0.129

0.470

0.758

0.724

0.411

–0.007

–0.332

Paralysis ticksa

–0.376

–0.254

–0.017

0.3

0.542

0.523

0.386

0.195

–0.018

Dogs ticksb

–0.39

–0.205

0.1

0.485

0.749

0.781

0.597

0.32

0.047

Removing ticksa

–0.241

–0.208

0.009

0.292

0.464

0.46

0.286

0.054

–0.148

Remove ticka

–0.267

–0.149

0.067

0.293

0.467

0.52

0.443

0.316

0.125

Cat ticka

–0.268

–0.151

0.087

0.355

0.581

0.511

0.219

–0.111

–0.292

NSW

         

Paralysis tickb

–0.312

–0.076

0.324

0.752

0.941

0.787

0.409

–0.02

–0.325

Tick paralysisb

–0.31

–0.019

0.38

0.768

0.932

0.776

0.428

–0.003

–0.326

Ticksb

–0.401

–0.103

0.328

0.7

0.844

0.682

0.355

0.056

–0.172

Tickb

–0.174

0.143

0.512

0.813

0.853

0.588

0.212

–0.098

–0.299

Paralysis ticksa

–0.293

–0.091

0.224

0.621

0.805

0.664

0.331

–0.008

–0.268

Dog tickb

–0.301

–0.092

0.242

0.577

0.798

0.797

0.559

–.277

–0.016

Dogs ticksa

–0.439

–0.25

0.049

0.378

0.619

0.697

0.54

0.258

–0.023

Removing ticksa

–0.335

–0.233

–0.045

0.128

0.25

0.284

0.186

–0.002

–0.157

Dog ticksa

–0.329

–0.254

–0.051

0.253

0.514

0.632

0.594

0.434

0.236

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