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Table 5 Results from CC and MI frailty models for 2-piece exponential model with 19 month cut point (data-driven model)

From: Piecewise exponential models to assess the influence of job-specific experience on the hazard of acute injury for hourly factory workers

 

Complete case analysis (N=33 427 jobs for 13 427 employees)

Multiple imputation (N=191 692 jobs for 81 301 employees)

 

HR (95% CI)

P-value

HR (95% CI)

P-value

0-19 Months (inexperienced period)

1.41 (1.35, 1.47)

<.001

1.33 (1.29, 1.36)

<.001

Male gender

0.62 (0.57, 0.68)

<.001

0.71 (0.68, 0.73)

<.001

Non-White

1.08 (0.99, 1.17)

0.070

0.97 (0.93, 1.00)

0.067

First job at company

0.88 (0.79, 0.98)

0.017

0.90 (0.88, 0.93)

<.001

Age at start of job

0.98 (0.98, 0.99)

<.001

0.99 (0.98, 0.99)

<.001

Physical demand

1.25 (1.21, 1.29)

<.001

1.26 (1.24, 1.29)

<.001

Smelter plant

1.24 (1.17, 1.32)

<.001

1.30 (1.24, 1.36)

<.001

Union plant

1.16 (1.04, 1.28)

0.006

1.30 (1.23, 1.38)

<.001

Original plant

1.01 (0.83, 1.22)

0.942

1.57 (1.50, 1.65)

<.001