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Table 4 Results of the regression analysis

From: Analysis of the regional distribution of road traffic mortality and associated factors in Japan

Explanatory variables Men Women
SPRC (95% CI) p value SPRC (95% CI) p value
Demographic characteristics
 Population density − 0.389 (− 0.455, − 0.323) 0.000 − 0.395 (− 0.460, − 0.329) 0.000
 Daytime population − 0.038 (− 0.083, 0.007) 0.100 − 0.102 (− 0.147, − 0.057) 0.000
 Proportion of young population − 0.006 (− 0.060, 0.049) 0.832 0.008 (− 0.046, 0.062) 0.774
 Proportion of non-Japanese persons 0.090 (0.040, 0.140) 0.000 0.085 (0.036, 0.134) 0.001
 Proportion of divorced persons − 0.005 (− 0.061, 0.051) 0.858 0.005 (− 0.050, 0.061) 0.850
Socioeconomic characteristics
 Proportion of persons with lower educational level 0.084 (0.004, 0.163) 0.039 0.009 (− 0.070, 0.087) 0.831
 Proportion of clerical workers − 0.015 (− 0.089, 0.059) 0.691 − 0.092 (− 0.165, − 0.019) 0.014
 Proportion of agriculture, forestry, and fisheries workers 0.105 (0.034, 0.177) 0.004 0.035 (− 0.036, 0.106) 0.332
 Proportion of service workers 0.051 (0.008, 0.094) 0.020 0.019 (− 0.024, 0.061) 0.388
 Proportion of blue-collar workers 0.069 (0.017, 0.121) 0.010 0.041 (− 0.010, 0.093) 0.118
 Proportion of unemployed persons − 0.066 (− 0.121, − 0.010) 0.020 − 0.023 (− 0.078, 0.032) 0.418
 Taxable income per capita − 0.027 (− 0.101, 0.047) 0.476 0.041 (− 0.032, 0.115) 0.270
Medical characteristics
 Number of clinics per 100,000 persons 0.040 (− 0.007, 0.087) 0.095 0.020 (− 0.027, 0.067) 0.402
 Number of physicians per 100,000 persons 0.071 (0.024, 0.118) 0.003 − 0.006 (− 0.052, 0.041) 0.803
 Number of hospitals per 100,000 persons 0.047 (0.003, 0.091) 0.036 0.028 (− 0.015, 0.072) 0.204
Weather characteristics
 Proportion of rainy days − 0.026 (− 0.076, 0.025) 0.314 0.062 (0.013, 0.112) 0.014
 Proportion of snow days − 0.100 (− 0.170, − 0.031) 0.005 − 0.128 (− 0.197, − 0.059) 0.000
Characteristics related to vehicles
 Proportion of holders of a driver’s license 0.013 (− 0.112, 0.137) 0.844 0.013 (− 0.110, 0.137) 0.830
 Number of owned vehicles per household 0.082 (− 0.044, 0.208) 0.201 0.156 (0.032, 0.280) 0.014
 Number of owned motorcycles per 1000 persons 0.013 (− 0.031, 0.056) 0.576 − 0.023 (− 0.066, 0.020) 0.298
  1. SPRC standardized partial regression coefficient, CI confidence interval