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Table 6 Association of risk factors with shoulder ulcers

From: How effective are clinical pre-farrowing risk assessment and the use of soft rubber mats in preventing shoulder ulcers in at-risk sows?

 

Presence of shoulder ulcers (any score ≥ 1) n (%)

Absence of shoulder ulcers n (%)

Odds Ratio (95% Confidence Interval)

p-value

Subgroup without rubber mat (n = 566)

At-risk group

63 (62.4)

38 (37.6)

5.55 (3.51, 8.76)

<.0001

Non-at-risk group

107 (23.0)

358 (77.0)

1.0 (Ref.a)

 

Subgroup under risk (n = 194)

Rubber mat group

44 (47.3)

49 (52.7)

0.54 (0.31, 0.96)

0.0358

No rubber mat group

63 (62.4)

38 (37.6)

1.0 (Ref.a)

 
  1. aRef. = Reference group