114 | Chapter 14 Table 4.2 The effects of major life events on the number of sports and sport frequency. S MAJOR LIFE EVENTSd Educational domain Not in full-time education vs. in full-time educatione Leaving full-time educationf Employment domain Working vs. not working (>32 hours a week)e Beginning work (>32 hours a week)f Relationship domain In a relationship vs. singlee Entering an intimate relationshipf Civil/Marital domain Cohabiting/married vs. not cohabiting/not marriede Starting to cohabit/getting marriedf Parental domain Parent vs. non-parente Becoming a parentf 0.599 0.891 0.950 0.932 0.933 0.882 0.870 0.895 0.842 0.808 Exp(B) 0.000*** 0.049* 0.166 0.290 0.072+ 0.048* 0.000*** 0.101 0.000*** 0.007** sig.c Number of sportsa 0.550 0.819 0.913 0.838 0.861 0.848 0.817 0.825 0.764 0.770 Exp(B) 0.000*** 0.003** 0.064+ 0.015* 0.004** 0.023* 0.000*** 0.011* 0.000*** 0.003** sig.c Sport frequencyb ource: NELLS wave 1 (2009) and wave 2 (2013); N=2,317 aMixed-effects Poisson regression analyses bMixed-effects negative binomial regression analyses c+p<0.10; *p<0.05; **p<0.01; ***p<0.001 (two-tailed) dWe examined the influence of each event in a separate analysis, in which we controlled for gender, migration background, age (between-person differences), and aging (within-person changes). The complete results from these separate analyses, and from an additional analysis including all events and controls simultaneously, are available in appendix C (Table C1 to C6). eBetween variable: Exp(B) = estimate of the between-person effect of the event, thus reflecting interpersonal differences fWithin variable: Exp(B) = estimate of the within-person effect of the event, thus reflecting changes within individuals Frequency of sport participation Table 4.2 also displays results on the effects of themajor life events on the sport frequency of our respondents, based on negative binomial regression analyses, again controlled for gender, migration background, age (between-person difference), and aging (within-person change). We found significant betweenperson differences in sport frequency with respect to all major life events. As expected, those who had experienced a major life event participated less often