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Table 6 Means of pre-weaning mortality over time, following 65 herd vaccinations, compared to baseline

From: Assessment of immediate production impact following attenuated PRRS type 2 virus vaccination in swine breeding herds

Weeks post PRRSv MLV vaccination

Pre-weaning mortality means

Standard Error of the mean

P-value*

Baseline

13.97%

0.01497

1

13.12%

0.01407

1.000

2

14.23%

0.01526

0.0076

3

13.89%

0.01490

1.000

4

13.28%

0.01424

1.000

5

12.59%

0.01351

1.000

6

13.09%

0.01404

1.000

  1. * = mixed regression model of each group compared to baseline