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Table 4 Results of the general linear model (GLM) with Poisson error structure and log link function testing the influence of various factors on annual deworming frequency in cats

From: Survey of German pet owners quantifying endoparasitic infection risk and implications for deworming recommendations

  Estimate SE 95% CI z-value P-value
Intercept -0.133 0.162 -0.455–0.181 -0.817 0.414
Owner gender (ref: male, n = 311) -0.031 0.073 -0.175–0.111 -0.425 0.671
Owner age -0.002 0.003 -0.007–0.003 -0.766 0.444
Attitude towards pets
Affectionate (n = 258) Baseline      
Devoted (n = 113) 0.095 0.085 -0.073–0.260 1.117 0.264
Dispassionate (n = 77) -0.226 0.106 -0.438– -0.022 -2.133 0.033
Sceptical (n = 52) -0.006 0.119 -0.245–0.222 -0.047 0.963
Veterinary visits
Once a year only (n = 345) Baseline     
More than once a year (n = 155) 0.312 0.072 0.170–0.453 4.335 <0.001
German ESCCAP risk group
A (n = 264) Baseline     
D (n = 236) 0.515 0.074 0.371–0.661 6.982 <0.001
Neighbourhooda
Rural (n = 154) vs city (n = 91) 0.410 0.117 0.110–0.710 3.491 0.002
Suburban (n = 90) vs city (n = 91) 0.305 0.129 -0.026–0.635 2.358 0.083
Town (n = 165) vs city (n = 91) 0.316 0.117 0.017–0.616 2.703 0.034
Suburban (n = 90) vs rural (n = 154) -0.105 0.098 -0.356–0.146 -1.072 0.702
Town (n = 165) vs rural (n = 154) -0.093 0.084 -0.310–0.123 -1.106 0.681
Town (n = 165) vs suburban (n = 90) 0.012 0.101 -0.246–0.269 0.114 0.999
Source of information regarding deworming
Veterinarian/vet nurse (ref: yes, n = 32) -0.056 0.170 -0.395–0.274 -0.327 0.743
Non-veterinarian (other pet owners, pet shop staff, etc.) (ref: yes, n = 329) 0.170 0.078 0.018–0.324 2.177 0.029
Books and magazines (ref: yes, n = 87) -0.090 0.116 -0.323–0.132 -0.779 0.436
  1. Note: The model was significantly different from a null model containing only an intercept term (likelihood ratio test, χ2 = 120.19, df = 13, P < 0.001). Significant P-values are printed in bold
  2. aMultiple comparisons for the levels of neighbourhood using Tukey contrasts with single-step P-value adjustment were performed using the function glht from the package multcomp in R
  3. Abbreviations: SE, standard error; CI, confidence interval; Ref, reference