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Table 1 Associations between several factors and the annual pharmaceutical cost of wet compresses per resident: Results from five independent multiple linear regression analyses in the ecological study using each prefecture as an individual unit (n = 47)

From: National burden of the pharmaceutical cost of wet compresses and its cost predictors: nationwide cross-sectional study in Japan

Independent variable Beta (95% CI) P
Number of rheumatology physicians per 100,000 residents 28.2 (−2.8, 59.2) 0.074
Number of orthopedists per 100,000 residents 17.1 (0.62, 33.6) 0.042
Number of rehabilitation physicians per 100,000 residents 15.4 (4.2, 26.6) 0.008
Number of pediatricians per 100,000 residents 7.0 (−3.7, 17.7) 0.20
Number of internists per 100,000 residents 2.8 (−1.7, 7.2) 0.21
  1. The dependent variable was the age-standardized annual pharmaceutical cost of wet compresses per resident
  2. Beta indicates partial regression coefficients adjusted for covariates (age-standardized population sex ratio and annual income per resident) in each multiple linear regression model
  3. Bold text indicates statistically significant associations (P < 0.05)
  4. Adjusted R2 ranged from 0.180 to 0.278
  5. CI Confidence interval