Skip to main content

Table 3 Descriptive statistics for measures (baseline data with the exception of the NDI (4 months))

From: Properties of patient-reported outcome measures in individuals following acute whiplash injury

 

Outcome range

N

Mean (SD)

Median

Floor

Ceiling

EQ-5D (utility)

−0.594 to 1

3430

0.587 (0.298)

0.689

0.1%

8.3%

EQ-5D (VAS)

0 to 100

3361

63.67 (19.96)

65.0

0.1%

0.8%

SF-6D

0.41 to 1

3027

0.647 (0.136)

0.615

0%

0.7%

SF-12 (PCS)*

15.42 to 65.92

3076

40.26 (8.98)

39.16

0%

0%

SF-12 (MCS)*

9.51 to 68.21

3076

40.80 (12.80)

40.25

0%

0%

NDI

0 to 96

2963

21.03 (17.45)

18.0

11.5%

0%

  1. *The PCS and MCS are standardised to have a mean of 50 and a SD of 10 in the general population.