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Table 4 Multivariate association between questionnaire variables and injury risk among MP recruits

From: A prospective investigation of injury incidence and injury risk factors among army recruits in military police training

Variable

Strata

N

Hazard ratio (95% CI)

p-value

Men

Age

<20.0 years

1080

1.00

Referent

20.0-24.9 years

623

1.21 (1.02-1.43)

0.03

25–29.9 years

90

1.17 (0.81-1.67)

0.40

≥30 years

38

2.29 (1.49-3.53)

<0.01

Smoked ≥100 Cigarettes in Life

No

1271

1.00

Referent

Yes

560

1.32 (1.12-1.56)

<0.01

Physical Activity Before Basic Training Compared to Peers

Much Less Active

90

1.46 (1.01-2.10)

0.05

Less Active

313

1.51 (1.18-1.94)

<0.01

Average

439

1.09 (0.85-1.40)

0.49

More Active

637

0.84 (0.67-1.07)

0.16

Much More Active

352

1.00

Referent

Totally Recovered from Prior Injury

No Prior Injury

1324

1.00

Referent

No

27

1.97 (1.16-3.37)

0.01

Yes

480

1.18 (0.99-1.41)

0.07

Women

Age

<20.0 years

319

1.00

Referent

20.0-24.9 years

194

1.25 (1.00-1.55)

0.05

25–29.9 years

20

1.36 (0.77-2.39)

0.29

≥30 years

9

2.56 (1.19-5.49)

0.02

Smoked ≥100 Cigarettes in Life

No

396

1.00

Referent

Yes

146

1.20 (0.95-1.51)

0.10

Time Running/Jogging before Basic Training

≤1 month

142

1.61 (1.14-2.26)

<0.01

2–6 months

300

1.61 (1.18-2.20)

<0.01

≤7 months

100

1.00

Referent

Gone ≥6 Months without Menstrual Cycle in Last Year

No

494

1.00

Referent

Yes

44

1.66 (1.17-2.36)

<0.01

No Cycles Yet

4

0.27 (0.04-1.92)

0.19