Zero hurdle model coefficients (binomial with logit link):

Estimate

Std. Error

z value

p-value

(Intercept)

−4.0023

0.7556

-5.297

1.18e−07***

EID Testing Point

2 - 9 months

0.7273

0.4259

1.708

0.08768 .

9 - 12 months

−0.2469

0.5167

−0.478

0.63274

12 - 24 months

−0.3400

0.5508

−0.617

0.53702

Above 24 months

0.2962

0.4643

0.638

0.52350

PCR Type

Confirmatory PCR

2.1431

1.3091

1.637

0.10161

2nd/3rd PCR

2.0897

0.7344

2.845

0.00444**