Table 6

Multivariate analysis of injurya risk factors

Gender

Variable

Strata

N

Hazard Ratios(95%CI) fromCox Regressions

p-value(from Waldstatistic)


Men

Age

24.4-29.9 years

187

1.00

Referent


30.0-38.6 years

238

1.70 (1.20-2.42)

<0.01


300-Meter Sprint

40-44 seconds

122

1.00

Referent


45-46 seconds

132

1.34 (0.84-2.16)

0.22


47-48 seconds

108

1.84 (1.31-3.00)

0.01


49-55 seconds

63

1.75 (1.01-3.02)

0.05


1.5-Mile Run

8.18-10.35 minutes

108

1.00

Referent


10.36-11.10 minutes

107

1.14 (0.67-1.94)

0.63


11.11-11.64 minutes

104

1.84 (1.11-3.04)

0.02


11.65-15.02 minutes

106

1.95 (1.19-3.20)

<0.01


Smoked 100 Cigarettesin Lifetime

No

351

1.00

Referent


Yes

74

0.42 (0.25-0.71)

<0.01


Self Rating of PhysicalActivity

Less Active

6

6.68 (2.52-17.70)

<0.01


About the Same

30

0.56 (0.27-1.17)

0.12


More Active

389

1.00

Referent


Frequency of AerobicExercise in Last 2 Months

≤ 1 time/week

2

4.58 (0.97-21.71)

0.06


2-4 times/week

263

0.69 (0.49-0.97)

0.03


≥5 times/week

160

1.00

Referent


Returned to NormalPhysical ActivitySince UpperLimb Injury

No Injury

246

1.00

Referent


No

11

3.36 (1.48-7.62)

<0.01


Yes

168

1.41 (1.00-2.00)

0.05


Have KneePain LimitingActivity Sometime

No

313

1.00

Referent


Yes

112

1.84 (1.28-2.64)

<0.01


Women

1.5-Mile Run

10.05-12.06 minutes

34

1.00

Referent


12.07-12.95 minutes

32

1.00 (0.46-2.18)

0.99


12.96-14.92 minutes

32

1.95 (0.97-3.93)

0.06


Have BackPain LimitingActivity Sometime

No

78

1.00

Referent


Yes

20

2.37 (1.27-4.43)

<0.01


aAny injury (overuse and traumatic)

Knapik et al. BMC Public Health 2011 11:920   doi:10.1186/1471-2458-11-920

Open Data