Table 3

Association between team season injury rates and performance in professional football

 Crude analyses*Adjusted analyses*
β95% CIp Valueβ95% CIp Value
Final league ranking†
 Injury incidence−0.057−0.187 to 0.0720.386−0.049−0.161 to 0.0620.387
 Injury burden−0.009−0.017 to −0.0020.015−0.010−0.017 to −0.0020.011
 Match availability0.0860.005 to 0.1680.0370.0850.008 to 0.1630.031
Points per league match†
 Injury incidence−0.026−0.048 to −0.0030.026−0.024−0.046 to −0.0020.035
 Injury burden−0.002−0.003 to −0.001<0.001−0.002−0.003 to −0.001<0.001
 Match availability0.0190.009 to 0.029<0.0010.0190.009 to 0.028<0.001
 Injury incidence0.228−0.533 to 0.9900.5570.198−0.634 to 1.0300.641
 Injury burden−0.016−0.032 to 0.0010.062−0.021−0.042 to −0.0010.043
 Match availability0.179−0.009 to 0.3670.0620.2050.002 to 0.4080.048
  • *Analyses were made using a Generalised Estimating Equation with identity link to fit a linear regression on team-level data, with each team-season change as an observation. A negative β value for injury incidence and injury burden, and a positive β value for match availability, indicate an association between a lower season injury rate (compared with the adjacent preceding season) and a higher final league ranking, higher average points per league match and higher UEFA SCC, respectively.

  • Adjusted analyses of final league ranking and points per league match included change of head coach and UEFA SCC as independent variables.

  • ‡Adjusted analyses of UEFA SCC included change of head coach and points per league match as independent variables.

  • SCC, season club coefficient; UEFA, Union of European Football associations.