Table 3

Mean±SD or median (IQR) differences in workload between cases and controls

Time of yearWorkloadCasesControlsP valueEffect Size
Alln=57n=57
Workload at injuryAge22.81±2.9622.97±4.20
Career12741±964812406±93050.8930.03
7 days*126 (66, 192)90 (36, 156)0.0200.31
28 days*428 (313, 521)336 (228, 480)0.0170.31
90 days*1135 (863, 1481)876 (553, 1332)0.0050.37
365 days2413±8072130±8830.0760.34
Peak workload7 days289±61238±72<0.0010.77
28 days664±173554±1120.0030.57
90 days1410±5161097±5330.0020.60
Early-seasoninjuryn=8n=8
Workload at injuryAge23.32±4.0823.45±3.89
Career13078±726413206±75960.9730.02
7 days161±60108±680.1230.83
28 days473±77357±1820.1170.82
90 days721±206492±2710.0780.95
365 days*2075 (2277, 2384)1983 (1682, 2794)0.9590.04
Peak workload7 days261±33189±650.0141.40
28 days562±71393±1950.0381.15
90 days1013±409492±2710.0101.50
Mid-seasoninjuryn=20n=20
Workload at injuryAge23.18±4.3123.55±4.98
Career14472±11 43713810±11 2550.7770.06
7 days110±60114±840.8610.05
28 days409±185388±1610.7020.12
90 days1175±4391093±5050.5880.17
365 days2390±8222289±8130.6990.12
Peak workload7 days283±73245±600.0830.57
28 days644±173605±1790.4890.22
90 days1355±4511217±4720.3500.30
Late-seasoninjuryn=27n=27
Workload at injuryAge22.29±3.7822.33±3.69
Career11387±881211014±80810.9860.04
7 days*120 (57, 197)78 (39, 139)0.0610.36
28 days*408 (285, 523)263 (162, 485)0.0710.35
90 days*1238 (1097, 1686)1032 (559, 1335)0.0080.51
365 days2523±8211974±8850.0220.64
Peak workload7 days305±57247±790.0400.84
28 days710±185567±2240.0130.70
90 days1559±5411199±5280.0170.67
  • Parametric (d=) effect size: small ≥0.20; moderate ≥0.50; large ≥0.80. Non-parametric (r=) effect size: small ≥0.10; moderate ≥0.30; large ≥0.50.

  • *Denotes non-parametric.