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. 2022 Aug 11;14(8):1754. doi: 10.3390/v14081754

Table 2.

Summary statistics and odds ratio (OR) and 95% confidence interval (95% CI) for the presence of clinical signs at farm level with virus cluster and time of diagnosis in kits or adult females for all 69 infected farms.

Variable Categories N 1 Mean 2 OR 3 95% CI 3
Cluster A 41 5.27 Ref 3
C vs. A 15 4.00 0.81 0.45–1.45
D vs. A 7 1.57 0.22 0.08–0.53 *
Cluster C 15 4.00 Ref
A vs. C 41 5.27 1.23 0.69–2.21
D vs. C 7 1.57 0.27 0.09–0.72 *
Diagnosis kits 4 <August 27 1.44 Ref
≥August 42 3.57 4.25 1.90–10.39 *
Diagnosis females 5 <August 27 2.67 Ref
≥August 42 3.95 1.80 0.99–3.35

1 Total number of farms for the given variables; 2 Mean number of clinical symptoms observed on the farm at time of official sampling; 3 Clustered univariable grouped binomial logistic regression model estimates for the unadjusted odds ratio (OR) and lower and upper values for the 95% confidence interval (CI) around the OR for the likelihood of observing a symptom. 3 Ref is the category used as reference. 4 Total number of clinical signs in kits at time of diagnosis. This also corresponds to an age of kits <12 weeks before 1 August 2020 and >12 weeks from 1 August 2020 onwards; 5 Total number of clinical signs in adult females at time of diagnosis; * Significant associations are indicated with an asterisk.