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Table 2 Reproductive performance. Proportion (%) of return to service (≤ 35 days) and abortions (≥ 35 days) of gilts and sows from experiments A and B (phase I and II)

From: Field evaluation of the safety and compatibility of a combined vaccine against porcine parvovirus 1 and porcine reproductive and respiratory syndrome virus in breeding animals

  Return to serviceAbortions
GroupNtotalNreturned%returned95% CIaPbNabortions%abortions95% CIPb
Experiment AA-PRRSV+PPV1269197.14.310.80.62831.10.23.21.000
A-PPV1265228.35.312.320.80.12.7
Experiment B
phase I
BI-PRRSV+PPV110887.43.314.10.40832.80.67.90.683
BI-PPV110954.61.510.421.80.26.5
Experiment B
phase II
BII-PRRSV+PPV113642.90.87.41.00021.50.25.20.498
BII-PPV113043.10.87.700.00.02.8
  1. aConfidence interval
  2. bP-value of Fisher’s exact test for comparison between groups