Table 5.

Factor analysis of the balance of annual net profits.

Prefectures	Annual net profits (USD)		Population per CT (thousand people/unit)	Physician per CT (people/unit)
	SSCT	MSCT
Hokkaido	2,900	60,100	6.7	15.8
Aomori	−19,519	14,896	6.7	13.0
Iwate	−12,909	23,257	7.6	15.1
Miyagi	−11,558	114,552	14.7	33.9
Akita	5,271	125,681	11.1	23.8
Yamagata	16,155	141,692	10.5	23.4
Ibaraki	−21,417	65,475	9.8	17.1
Tochigi	−22,350	50,516	9.3	19.9
Gumma	−21,883	29,673	9.2	20.5
Saitama	3,827	98,858	13.3	20.5
Chiba	−8,618	165,737	15.1	26.9
Tokyo	−1,908	142,407	12.6	39.7
Kanagawa	5,692	191,914	16.0	32.4
Niigata	−11,716	137,249	9.9	19.2
Toyama	−27,843	118,900	7.4	18.3
Ishikawa	−13,040	127,002	8.4	23.3
Fukui	−17,083	69,029	7.4	18.1
Yamanashi	12,040	62,690	10.6	23.6
Nagano	3,029	105,839	9.6	21.2
Gifu	−21,007	167,894	8.5	17.1
Shizuoka	−17,858	134,534	10.5	20.3
Aichi	−10,406	208,556	12.2	25.6
Mie	−19,618	168,114	9.6	19.6
Shiga	−7,173	179,737	14.6	31.4
Kyoto	−2,918	168,488	12.6	39.2
Osaka	−1,468	161,626	11.0	29.7
Hyogo	−6,835	104,822	10.0	23.7
Nara	−17,067	144,773	11.8	26.5
Wakayama	−21,155	68,462	6.0	16.7
Tottori	−16,305	119,609	7.8	23.3
Shimane	−6,569	82,359	8.8	24.0
Okayama	−16,655	53,699	7.2	20.7
Hiroshima	−14,109	52,336	7.6	19.5
Yamaguchi	−17,829	54,277	6.3	16.1
Tokushima	−30,366	−6,934	4.7	14.6
Kagawa	−16,438	39,353	5.8	15.9
Ehime	−21,651	77,867	6.6	16.7
Kochi	−28,156	−17,651	4.9	14.3
Fukuoka	−4,975	77,104	8.4	25.1
Saga	−21,442	8,174	6.9	18.1
Nagasaki	−3,142	77,716	7.0	20.1
Kumamoto	−22,552	2,779	6.0	16.7
Oita	−24,360	14,326	5.5	14.6
Miyazaki	−7,737	−8,199	6.5	15.7
Kagoshima	−9,137	−26,799	5.3	13.1
Okinawa	−28,961	60,232	11.7	28.3
Correlation coefficients		SSCT	0.481(p < 0.01)	0.438(p < 0.01)
		MSCT	0.764(p < 0.01)	0.683(p < 0.01)

SSCT, single-slice computed tomography; MSCT, multi-slice computed tomography.