Table 6

Kaplan–Meier log rank

CategoryCandidate variablesKaplan–Meier log rank
Demographic/biometricAge10.182***
Weight9.726**
Height0.235
Playing position0.302
Injury historyAny previous injury0.166
Previous concussion4.605*
Use of protective equipmentMouthguard6.739**
Shoulder pads0.046
Head guard0.255
Strength profileRegular weight training10.949**
Upper body strength (bench press 1RM)0.361
Lower body strength (squat 1RM)0.019
Level of playAge first started playing rugby0.443
School team ranking α17.809 ***
Involved in provincial rugby21.367***
  • 1 degree of freedom (df) unless otherwise specified α.

  • *p<0.05.

  • **p<0.01.

  • ***p<0.001.

  • 1RM, 1 repetition maximum.