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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: J Head Trauma Rehabil. 2019 Jul-Aug;34(4):E1–E10. doi: 10.1097/HTR.0000000000000465

Table 1:

Summary of Sample Characteristics (N = 404)

Continuous Characteristics N Mean (SD) Median (IQR)
Age at Injury (years) 404 37.8 (16.0) 37 (23 – 49.5)
Age at 10 year FU (years) 404 47.9 (15.9) 48 (33 – 59)
Glasgow Coma Scale 304 9.5 (4.7) 9 (5 – 14)
FIM Motor Discharge 403 69.2 (18.1) 72 (60 – 83)
FIM Cognitive at Discharge 403 23.5 (6.6) 25 (20 – 28)
Post Traumatic Amnesia (days) 388 31.7 (31.7) 23 (10.5 – 44)
Time to Follow Commands (days) 400 10.5 (20.2) 3 (0.5 – 12)
Rehabilitation Length of Stay (days) 404 26.1 (19.7) 21 (13 – 33)

Nominal Characteristics N Count (Percent)

Sex 404
    Female 97 (24.0%)
    Male 307 (76.0%)
Race 404
    White 280 (69.3%)
    Black 78 (19.3%)
    Hispanic 31 (7.7%)
    Other 15 (3.7%)
Marital Status at injury 404
    Married 141 (34.9%)
    Not Married 263 (65.1%)
Education Level 404
    Less than High School 138 (34.2%)
    High School 109 (27.0%)
    Some College 91 (22.5%)
    College 66 (16.3%)
Employment at injury 404
    Employed 277 (68.6%)
    Not Employed 127 (31.4%)

IQR = interquartile range, SD = standard deviation, FU = follow-up

Distributions markedly skewed thus median and IQR are more appropriate measures of center and spread than mean and SD