Table 1

Capillary morphology of individual fingers in 18 patients with Raynaud’s phenomenon, assessed with a standard capillary microscope in comparison with the modified dermatoscope

		Microscope		Dermatoscope		κ
		Microscope		Present	Absent	κ
Dilatation	Present	37	3	0.93
	Absent	2	92
Mega-capillaries	Present	27	2	0.97
	Absent	0	104
Avascular fields	Present	27	4	0.93
	Absent	1	103
Ramified capillaries	Present	32	13	0.78
	Absent	2	88
Contorted capillaries	Present	100	12	0.81
	Absent	1	22
Micro-haemorrhages	Present	35	4	0.94
	Absent	0	97

Because of the limited visibility in some fingers the total number of comparisons may differ. The kappa test statistic (κ) is used for statistical analysis of the correlation between the two methods.