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. 2017 May 19;10:248. doi: 10.1186/s13071-017-2193-6

Table 2.

Results of GLMMs with negative binomial error structure testing the effect of month on the number of total and embryonated infective Toxocara eggs per sandpit sample

Term Estimate Std. Error z-value P-value
Total number of Toxocara eggs Intercept -2.83 0.71 -3.99 < 0.001***
January 3.83 0.81 4.73 < 0.001***
February 4.23 0.80 5.26 < 0.001***
March 2.47 0.82 3.01 0.003**
April 2.89 0.82 3.53 < 0.001***
May 2.44 0.83 2.96 0.003**
June 3.04 0.82 3.70 < 0.001***
July 1.30 0.86 1.52 0.128
August 1.49 0.85 1.74 0.082
October 2.04 0.83 2.46 0.014*
November 0.92 0.88 1.05 0.294
December 2.17 0.84 2.60 0.009**
Number of embryonated infective Toxocara eggs Intercept -4.06 1.18 -3.43 < 0.001***
January 3.74 1.32 2.83 0.005**
February 4.89 1.32 3.71 < 0.001***
March 1.90 1.37 1.39 0.164
April 3.27 1.36 2.41 0.016*
May 0.57 1.49 0.38 0.704
June 2.04 1.38 1.47 0.141
July 0.60 1.49 0.40 0.687
August 0.71 1.48 0.48 0.631
October -0.30 1.68 -0.18 0.858
November -0.07 1.64 -0.04 0.965
December 2.36 1.35 1.75 0.081

*P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001

September, the month with the lowest contamination rate, was chosen as reference. Asterisks indicate statistically significant differences