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. Author manuscript; available in PMC: 2025 Feb 19.
Published in final edited form as: Hum Factors. 2014 Feb;56(1):215–227. doi: 10.1177/0018720813508778

TABLE 1:

Baseline Characteristics of the 344 Participants With Three Surveys (Baseline, 1- and 2-Year Follow-Ups) Compared to Workers Excluded From Analysis Due to Incomplete Follow-Up (Missing Either or Both 1- or 2-Year Surveys)

Study Respondents With 3 Surveys (Included): n = 344a Baseline Respondents Without 3 Surveys (Excluded): n = 523a
n % n %
Musculoskeletal outcomes
 Pain at any site 248 72 385 74
 Widespread pain 63 18 71 14
 Intense pain 181 54 282 55
 Pain interferes work 117 35 193 37
 Pain interferes sleep 137 41 215 42
 Intense pain plus feelings of depression 67 20 113 22
Gender
 Female 314 94 460 90
Age (years)
 <40 121 37 248 50
 40+ 208 63 252 50
Race
 White 147 43 219 42
 African American 158 46 254 49
 Other 39 11 50 10
Education (years)
 1–7 57 17 125 24
 8–9 100 30 179 35
 >9 182 53 208 41
Nursing aide 243 71 341 65
No. of physical assaults in past 3 months
 0 150 45 271 54
 1–2 91 27 131 26
 3+ 91 28 104 21
Likely to leave the job in 2 years 127 38 222 44
M SD M SD
Physical demands of work (range = 4–16) 10.3 2.9 10.2 2.9
Psychological demands of work (range = 2–8) 5.9 1.2 5.8 1.2
Job control (range = 4–16) 5.5 1.3 5.5 1.4
Supervisor support (range = 2–8) 5.5 1.6 5.6 1.6
Work-family imbalance (range = 1–4) 2.5 0.7 2.5 0.7
Safety climate at work (range = 1–4) 2.7 0.6 2.7 0.5
a

Some percentages may not sum to 100% due to missing values, which ranged from 0 to 24 records across all variables and surveys.