The great East Japan earthquake affected the laboratory findings of hemodialysis patients in Fukushima

BMC Nephrology

Table 3 Univariate and multivariate analyses of various factors in relation to a reduction of BUN level 1 week after the earthquake

a) BUN according to patient characteristics using Mann-Whitney Utest
		BUN
		Mean±SD	P
Sex			0.04*
	Male	55.7±15.0
	Female	49.1±11.2
Diabetes			0.74
	Yes	54.2±15.3
	No	53.1±13.5
Hypertension			0.09
	Yes	52.0±13.8
	No	58.0±14.4
Hospital			0.22
	Hanawa	55.0±14.1
	Soma	51.1±14.1
b) Correlation between BUN and patient characteristics using simple regression analysis
		BUN
		*C.C*	P
Age		0.29	0.008*
DW		0.17	0.12
Height		0.20	0.09
c) Multivariate analysis of various factors in relation to reduction of BUN level 1 week after the earthquake
		BUN
		b	P
Sex		0.12	0.28
Diabetes		0.02	0.82
Hospital		−0.12	0.27
Age		−0.23	0.05

BUN, blood urea nitrogen; SD, standard deviation; Hanawa, Hanawa Welfare Hospital, not seriously damaged by the tsunami and far from the nuclear power plant accident;
Soma, Soma Central Hospital, seriously damaged by the tsunami and near the nuclear power plant accident; c.c., correlation coefficient; DW, dry weight; b, standard partial regression coefficient; * p<0.05.

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