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Table 3 Main effects of the covariates on the weekly working time (WWT) of full-time teachers (n = 6,109)

From: Teachers’ working time as a risk factor for their mental health - findings from a cross-sectional study at German upper-level secondary schools

Variables WWT Online Questionnaire M ± SD [h] WWT Online Protocol M ± SD [h] F-value p-value η2partial
  42.8 ± 8.1 45.2 ± 8.7 51.50 0.001 0.017
Covariates
 Sex    40.39 <0.001 0.007
 Age group    42.15 <0.001 0.007
 Subject profile    7.96 0.005 0.001
 Interaction effects      
 Method * sex    8.51 0.001 0.003
 Method * age group    3.62 0.027 0.001
 Method * subject profile    4.04 0.018 0.001
  1. Notes: M ± SD mean ± standard deviation. Online Protocol: mean of illness-free weeks. General linear model with measurement repetition; internal subject design: method; design: constant term + sex + age group + subject profile; test variable: F-value; df = 2; error def = 6,104; p-value: significance (two-sided); η2partial: partial eta square (effect size): 0.010 - 0.060 = small effect, <0.010 = none effect [41]