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Table 2 Univariable logistic regression of acute back pain and multivariable logistic regression of acute back pain, adjusted for significantly associated covariates

From: Factors associated with chronic and acute back pain in Wales, a cross-sectional study

 

Univariable analysis

Multivariable analysis

N

Crude OR (95% CI)

P value

Adjusted OR (95% CI)

P value

WIMD 2014 quintile

14,359

    

 Least deprived

 

Reference category

 2

 

1.05 (0.94, 1.17)

0.405

1.03 (0.92, 1.16)

0.611

 3

 

1.03 (0.93, 1.15)

0.539

1.00 (0.89, 1.13)

0.940

 4

 

1.00 (0.89, 1.12)

0.958

0.93 (0.82, 1.05)

0.261

 Most deprived

 

0.91 (0.81, 1.03)

0.138

0.86 (0.76, 0.98)

0.029

Age

14,359

    

 16–24

 

Reference category

 25–44

 

1.69 (1.49, 1.93)

< 0.001

1.64 (1.42, 1.90)

< 0.001

 45–64

 

1.84 (1.62, 2.09)

< 0.001

1.73 (1.50, 1.99)

< 0.001

 65+

 

1.44 (1.26, 1.65)

< 0.001

1.49 (1.27, 1.73)

< 0.001

Gender

14,359

    

 Male

 

Reference category

 Female

 

1.08 (1.00, 1.16)

0.040

1.01 (0.94, 1.10)

0.761

Educational attainment

13,398

    

 No qualification

 

Reference category

 Degree equivalent or higher

 

1.21 (1.07, 1.36)

0.002

1.28 (1.12, 1.47)

< 0.001

 Other qualifications

 

1.22 (1.11, 1.34)

< 0.001

1.32 (1.18, 1.47)

< 0.001

BMIa

13,387

    

 Less than 18.5

 

0.65 (0.49, 0.87)

0.004

0.79 (0.58, 1.07)

0.127

 18.5 to under 25

 

Reference category

 25 to under 30

 

1.20 (1.11, 1.31)

< 0.001

1.14 (1.04, 1.25)

0.004

 30 and over

 

1.33 (1.21, 1.46)

< 0.001

1.20 (1.08, 1.33)

0.001

Mental health (SF-36)

14,359

    

 Above averageb

 

Reference category

 Below averagec

 

1.60 (1.49, 1.72)

< 0.001

1.59 (1.47, 1.72)

< 0.001

Vigorous exercise

13,757

    

 0–2 days per week

 

Reference category

 3–5 days

 

0.83 (0.73, 0.94)

0.03

0.91 (0.80, 1.03)

0.156

 6–7 days

 

0.83 (0.68, 1.02)

0.077

0.91 (0.74, 1.13)

0.406

  1. aBody mass index
  2. bMental health score above the average of the general population
  3. cMental health score below the average of the general population