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Table 2 Percentage of mortality, pigs with clinical signs and pigs received concomitant treatments throughout the study (95 % CI)

From: Production results from piglets vaccinated in a field study in Spain with a Type 1 Porcine Respiratory and Reproductive virus modified live vaccine

Parameter Week Group 1 + 2 + 3 Week Group 1 Week Group 2 Week Group 3
Unvaccinated pigs Vaccinated pigs Unvaccinated pigs Vaccinated pigs Unvaccinated pigs Vaccinated pigs Unvaccinated pigs Vaccinated pigs
Number of animals 674 690 214 224 226 230 234 236
Mortality (%) 6.1 4.9 5.1 3.6 5.8 4.8 7.3 6.4
(4.5–8.2) (3.6–6.8) (2.9–9.0) (1.8–6.9) (3.4–9.6) (2.7–8.4) (4.6–11.3) (3.9–10.2)
Any clinical sign (%)† 8.3a 4.2b 7.0 3.6 6.2 3.0 11.5a 5.9b
(6.5–10.6) (2.9–6.0) (4.3–11.2) (1.8–6.9) (3.7–10.1) (1.5–6.2) (8.1–16.3) (3.6–9.7)
Respiratory signs (%) 4.7a 2.3b 3.3 1.8 3.1 1.3 7.7 3.8‡
(3.4–6.6) (1.4–3.7) (1.6–6.6) (0.7–4.5) (1.5–6.3) (0.4–3.8) (4.9–11.8) (2.0–7.1)
Skin alterations (%) 2.4a 0.7b 2.3 0.9 1.3 0.4 3.4 0.8
(1.5–3.8) (0.3–1.7) (1.0–5.4) (0.3–3.2) (0.5–3.8) (0.8–2.4) (1.7–6.6) (0.2–3.0)
Concomitant treatments (%) 23.0a 18.6b 15.5 15.6 21.2a 12.2b 32.5 27.5
(20.0–26.3) (15.8–21.6) (10.4–19.8) (11.5–21.0) (16.4–27.0) (8.6–17.0) (26.8–38.7) (22.2–33.6)
  1. 95 % CI: Wilson’s Confidence Interval 95 % for a single proportion
  2. † Respiratory signs and/or skin alterations and/or joint disorders and/or diarrhoea. Prevalence of joint disorders and diarrhoea was 1 % or lower
  3. a, b Within week group, different letter in the same row indicates statistically significant difference (p < 0.05). Differences between the treatment groups were tested by Fisher’s exact test