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Table 3

Results of the binomial generalized linear mixed model for the effect of day of sorting, tray position in the rack, type of sorting, and the operator on female contamination rates in male pupae using the Fay–Morlan glass plate separator.

Factors Estimate SE z-value p-value
 (Intercept) −5.071 0.44928 −11.287 <2e-16
Position within the rack
 Tray position 10 −0.05583 0.73281 −0.076 0.939
 Tray position 20 0.05491 0.67326 0.082 0.9349
 Tray position 30 −17.23784 2328.5055 −0.007 0.9941
 Tray position 40 −0.64143 0.83862 −0.765 0.4443
 Tray position 50 −17.25053 2853.79142 −0.006 0.9952
Type of sorting
 Mixed pupae sorting −1.03663 0.83814 −1.237 0.2162
Day of sorting
 Day 7 0.47505 0.55998 0.848 0.3962
 Day 8 1.3836 0.4979 2.779 0.0054
 Day 9 1.70302 0.48558 3.507 0.0004
 Day 10 1.80168 0.48246 3.734 0.0002
Operator
 Operator B −0.24502 0.07293 −3.36 0.0008
 Operator C −0.28459 0.07593 −748 0.0001

Values were compared to the reference tray position 1 (bottom), individual tray sorting, day 6 and operator A. Values in bold indicate a statistically significant difference (p < 0.05).

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