Skip to main content

Advertisement

Table 3 The association of combined socioeconomic status with low back pain after multiple data imputations (n = 26,037. Poisson regression analysis)

From: Socioeconomic inequalities in low back pain among older people: the JAGES cross-sectional study

Socioeconomic status Model A Model B Model C
PR 95% CI PR 95% CI PR 95% CI
Fixed effect parameters
 Educational attainment, years (ref, ≥13)
  10–12 1.03 0.98, 1.08 1.01 0.97, 1.06
  < 10 1.05 1.002, 1.11 1.02 0.97, 1.08
 Past occupation (ref, professionals)
  White-collared workers 1.01 0.95, 1.06 1.01 0.96, 1.07
  Blue-collared workers 1.05 0.99, 1.10 1.03 0.97, 1.08
  Never worked before 1.02 0.94, 1.11 1.00 0.92, 1.08
 Income, yen (ref, ≥3 million)
  2 million–2.99 million 1.00 0.95, 1.06 1.00 0.95, 1.06
  1 million–1.99 million 1.02 0.96, 1.07 1.02 0.96, 1.08
  < 1 million 1.06 0.99, 1.13 1.06 0.99, 1.14
 Subjective economic situation (ref, very comfortable)
  Comfortable 1.04 0.97, 1.11 1.04 0.97, 1.11
  Difficult 1.12 1.04, 1.20 1.15 1.07, 1.24
  Very difficult 1.17 1.07, 1.29 1.27 1.15, 1.39
 Wealth, yen (ref, ≥50 million)
  10 million–49.99 million 1.01 0.95, 1.07 1.00 0.94, 1.06
  5 million–9.99 million 0.99 0.93, 1.07 0.99 0.92, 1.06
  1 million–4.99 million 1.01 0.94, 1.09 1.00 0.93, 1.08
  < 1 million 1.03 0.95, 1.12 0.99 0.95, 1.11
 Random parameter
  Municipality level variance (standard error) 0.001 (< 0.001) 0.001 (< 0.001) 0.001 (< 0.001)
  1. Abbreviations: PR prevalence ratio, 95% CI 95% credible interval
  2. Model A, educational attainment and past occupation concurrently added to the model adjusting for age, sex, number of persons living together, marital status, musculoskeletal disease, BMI, drinking habit, smoking and physical activity
  3. Model B, income, subjective economic situation, wealth concurrently added to the model adjusting for age, sex, number of persons living together, marital status, musculoskeletal disease, BMI, drinking habit, smoking and physical activity
  4. Model C, all socioeconomic status concurrently added to the model adjusting for age, sex, number of persons living together, marital status, musculoskeletal disease, BMI, drinking habit, smoking and physical activity