Table 12.
Distribution of each variable
| Variables | Mean | Median | SD |
| Populationa | 2716744.68 | 1769000.00 | 2571553.95 |
| Average travel time (minutes) | 57.76 | 55.52 | 20.42 |
| Pavement ratio (%)b | 28.13 | 25.60 | 12.34 |
| Size(km2)c | 7739.15 | 5761.00 | 11701.22 |
| Kilometres of general roadb | 23913.19 | 19448.00 | 14270.90 |
| Kilometres of express roadb | 153.15 | 133.00 | 100.63 |
| Mountain area(km2)d | 4900.64 | 3820.00 | 5994.43 |
| Total kilometres of all roadsb | 25161.57 | 23167.00 | 15144.02 |
| Road area (km2)b | 150.81 | 136.43 | 104.14 |
| Kilometres of impassable roadb | 3495.96 | 2343.00 | 3741.87 |
| Maintenance ratio of general road (%)b | 53.94 | 53.30 | 0.12 |
| Number of tertiary care centrese | 3.72 | 3.00 | 3.58 |
| Number of fire stationsf | 96.66 | 78.00 | 82.14 |
| Percentage of emergency teamf with EMT to all emergency teams (%) | 70.34 | 71.30 | 16.47 |
| Number of ambulancesf | 119.91 | 94.00 | 74.75 |
| Number of emergency teamsf | 100.23 | 79.00 | 60.13 |
| Number of emergency teams with EMTf | 73.17 | 50.00 | 53.85 |
| Number of EMTf | 189.00 | 249.91 | |
| Number of emergency crewf | 1232.68 | 968.00 | 743.49 |
| Number of emergency medical specialistse | 41.11 | 21.00 | 54.00 |
| Number of tertiary hospitalsg | 4.32 | 3.00 | 3.64 |
| Number of secondary hospitalsg | 76.49 | 52.00 | 65.85 |
| Number of primary hospitalsg | 36.91 | 28.00 | 30.88 |
N = 47 for all variables. EMT, emergency medical technician.
aMinistry of Internal Affairs and Communications, Statistics Bureau 2004.
bNational Land and Transportation Ministry 2003.
cGeographic Institute Survey 2005.
dNational Land and Transportation Ministry 1983.
eJapanese Association for Acute Medicine, as of February 2005.
fFire and Disaster Management Agency, Ministry of Internal Affairs and Communications 2004.
gSurvey of Health Care Facility, 2002 Ministry of Health, Labour and Welfare.