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Table 2 Analysis of the association between physical work-requirement factors and work-related injuries (N = 7212)

From: A longitudinal study of work-related injuries: comparisons of health and work-related consequences between injured and uninjured aging United States adults

  aOutcome: Number of injury events bOutcome: Injured or not
Univariate IRRs Multivariable IRRs Univariate HRs Multivariable HRs
WORK-REQUIREMENT FACTORS: Does your work require
Excessive physical effort?
  All/almost all the time 3.96
(3.15, 4.97)
2.19
(1.57, 3.05)
3.42
(2.80, 4.18)
2.32
(1.77, 3.03)
  Most of the time 2.91
(2.25, 3.74)
1.71
(1.19, 2.46)
2.48
(1.99, 3.08)
1.84
(1.37, 2.47)
  Some of the time 1.83
(1.47, 2.28)
1.46
(1.11, 1.91)
1.77
(1.45, 2.15)
1.59
(1.24, 2.02)
  None/almost none of the time 1 1 1 1
Lifting heavy loads?
  All/almost all the time 3.88
(3.15, 4.45)
2.27
(1.60, 3.24)
3.35
(2.75, 4.09)
2.52
(1.88, 3.39)
  Most of the time 2.12
(1.62, 2.77)
1.69
(1.14, 2.49)
2.24
(1.74, 2.89)
1.81
(1.27, 2.58)
  Some of the time 2.26
(1.88, 2.70)
1.74
(1.37, 2.21)
2.12
(1.81, 2.47)
1.89
(1.54, 2.31)
  None/almost none of the time 1 1 1 1
Stooping/kneeling/crouching?
  All/almost all the time 3.88
(3.16, 4.78)
2.20
(1.61, 3.01)
3.30
(2.72, 3.99)
2.41
(1.83, 3.15)
  Most of the time 2.77
(2.10, 3.65)
1.87
(1.33, 2.61)
2.51
(2.01, 3.12)
2.01
(1.58, 2.79)
  Some of the time 1.80
(1.49, 2.19)
1.46
(1.13, 1.89)
1.90
(1.59, 2.28)
1.67
(1.33, 2.09)
  None/almost none of the time 1 1 1 1
  1. aGEE models with negative binomial distribution: adjusted for age; gender; race; ethnicity; chronic physical and mental health conditions; acute depression; alcohol consumption; work category; work tenure; and previous history of work-related injuries (hours worked was the offset or exposure time)
  2. bCox models: age was used as the time to follow-up variable; other variables adjusted for were same as the GEE models