Table 5 Correlation analysis between the sample variables and the P. gulae detection test results of veterinarians

Sex

−0.362

0.620

−0.585

0.559

1.256

Age

−0.734

0.749

−0.980

0.327

3.057

Contact degree with ultrasonic scaling

−0.680

0.368

−1.846

0.065^*

1.391

Contact frequency with ultrasonic scaling

0.098

0.637

0.153

0.878

1.353

Working years

0.469

0.694

0.675

0.500

3.239

Keeping pet

−0.346

0.813

−0.426

0.670

1.912

Close contact with pets

0.798

0.823

0.969

0.332

2.195

Smoking

1.29

0.906

1.422

0.155

1.235

Oral health

0.606

0.472

1.283

0.200

1.181