Laboratory Test Abnormalities are Common in Polymyositis and Dermatomyositis and Differ Among Clinical and Demographic Groups

Table 2: Summary of Moderately to Highly Correlated Laboratory Results^*

First Test	Correlated Test	n	Rho
Aldolase	ALT	506	0.77
	AST	506	0.80
	CK	505	0.82
	LD	472	0.78
	Myoglobin	177	0.82
ALT	Aldolase	506	0.77
	AST	617	0.86
	CK	612	0.70
	LD	576	0.67
	Myoglobin	268	0.73
AST	Aldolase ALT	506 617	0.80 0.86
	CK	611	0.76
	LD	575	0.73
	Myoglobin	267	0.75
CK-MB	CK-MM	350	-0.77

CK	Aldolase	505	0.82
	ALT	612	0.70
	AST	611	0.76
	LD	575	0.70
	Myoglobin	267	0.89
Hematocrit	ESR	604	-0.58
LD	Aldolase	472	0.78
	ALT	576	0.67
	AST	575	0.73
	CK	575	0.70
	Myoglobin	264	0.70
Lymphocytes	Polys	606	-0.92
	WBC	607	-0.50
Myoglobin	Aldolase	177	0.82
	ALT	268	0.73
	AST LD	267 264	0.75 0.70
	CK	267	0.89
Polys	Lymphocytes	606	-0.92
	WBC	606	0.55
WBC	Lymphocytes	607	-0.50
	Polys	606	0.55

^* All Spearman Rho rank correlation coefficient p-values were <0.00005. Moderately to highly correlated Spearman r values were ≥ 0.50. Abbreviations: n, number of values available for analysis; others as in Table 1.