88 | Chapter 1 3 Table 3.2 Binomial logistic regression of stopping a sport and ending a sport club membership in young adulthood (ages 18 to 35). CONTROL VARIABLES Female Age Period Educational level Migration background Native Dutch origin (ref.) Non-native of non-western origin Non-native of western origin Participation duration Number of sports Intrinsic motivation Sport participation in childhood LIFE EVENTSa Beginning work Starting to live on one’s own Starting to cohabit or got married Birth of one’s first child Constant Chi-square model Degrees of freedom N person-year combinations Explanatory power (Nagelkerke R2) 0.317*** –0.022*** 0.003* 0.097*** –0.173* 0.041 –0.086*** 0.305*** –0.094+ –0.192*** –8.800** 898,179 10 24947 0.069 Model 1 b 0.312*** –0.018*** 0.004* 0.093** –0.172* 0.048 –0.086*** 0.308*** –0.097+ –0.196*** 0.263** 0.290*** 0.341*** 0.311** –9.220** 955,012 14 24947 0.074 Model 2 b 0.356*** –0.037*** –0.002 0.058 –0.226+ –0.100 –0.051*** 0.167*** 0.059 –0.302*** 2.029 274,727 10 13955 0.040 Model 1 b 0.348*** –0.031*** –0.002 0.054 –0.230* –0.095 –0.051*** 0.169*** 0.054 –0.303*** 0.186 0.393*** 0.344** 0.210 1.908 309,761 14 13955 0.045 Model 2 b STOP PRACTISING A SPORT ENDING A SPORT CLUB MEMBERSHIP Source: SportersMonitor 2010 (Nstopping a sport=2272; Nending a sport club membership=1530). ***p< 0.001, **p< 0.01, *p< 0.05, +p< 0.10 (two-tailed) aResults of sensitivity analyses in which the life events were added separately in Model 2 were similar, but the effect of beginning work on ending a sport club membership was significant (p<0.10) as well when added alone (see Table B4 in the Appendix), which is probably caused by issues of statistical power. As our focus lies on the importance of major life events for stopping sport participation, we first discuss the results of Model 2 in Table 3.2. The impacts of all four life events on stopping participation in a sport in young adulthood were in line with our expectations. Beginning to work (b=0.263), starting to live on one’s own (b=0.290), starting to cohabit or getting married (b=0.341) and the birth of one’s first child (b=0.311) all increased the risk to stop practising a
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