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

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)

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

The dependent variable was the age-standardized annual pharmaceutical cost of wet compresses per resident
Beta indicates partial regression coefficients adjusted for covariates (age-standardized population sex ratio and annual income per resident) in each multiple linear regression model
Bold text indicates statistically significant associations (P < 0.05)
Adjusted R² ranged from 0.180 to 0.278
CI Confidence interval

ISSN: 2191-1991