Table 3

Factors affecting reported pain and regularity of analgesic use: Simple and multiple linear regression.

Variable

Factors affecting regularity of analgesic use

Factors affecting pain severity

Simple Linear Regression

Multiple Linear Regression*

Simple Linear Regression

Multiple Linear Regression#

β

(9%% CI)

SE

p value

β

(95% CI)

SE

p value

β

(95% CI)

SE

p value

β

(95% CI)

SE

p

value

Pain

0.35

(0.12 to 0.58)

0.12

0.003

0.37

(0.11 to 0.63)

0.13

0.006

-

-

-

-

-

-

Self-efficacy

-0.15

(-0.67 to 0.38)

0.27

0.578

0.09

(-0.49 to 0.67)

0.29

0.768

-0.85

(-1.13 to -0.58)

0.14

<0.001

-0.82

(-1.13 to -0.52)

0.16

<0.001

Gender

0.83

(-1.40 to 3.06)

1.13

0.464

0.64

(-0.60 to 2.87)

1.13

0.574

0.58

(-0.68 to 1.84)

0.64

0.368

0.52

(-0.77 to 1.80)

0.65

0.431

Age

0.04

-0.03 to 0.1)

0.03

0.245

0.04

(-0.03 to 0.11)

0.04

0.308

0.01

(-0.03 to 0.05)

0.02

0.53

0.01

(-0.03 to 0.05)

0.02

0.541

Ethnicity

1.69

(-0.68 to 4.07)

1.20

0.161

0.98

(-1.54 to 3.5)

1.28

0.446

1.46

(0.12 to 2.81)

0.68

0.034

1.39

(0.04 to 2.82)

0.73

0.057

Disease duration

0.04

(-0.05 to 0.14)

0.05

0.4

0.03

(-0.08 to 0.13)

0.05

0.629

-0.01

(-0.07 to 0.05)

0.03

0.68

-0.01

(-0.07 to 0.05)

0.03

0.769

Regularity of analgesic use

-

-

-

-

-

-

0.14

(0.05 to 0.23)

0.05

0.003

0.12

(0.04 to 0.21)

0.04

0.006

*Percentage of explained variance 3.7

Variables adjusted for: pain, self-efficacy, gender, age, ethnicity, disease duration

# Percentage of explained variance 13.5

Variables adjusted for: self-efficacy, gender, age, ethnicity, disease duration, regularity of analgesic use

Blamey et al. BMC Musculoskeletal Disorders 2009 10:137   doi:10.1186/1471-2474-10-137