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Table 2 Comparison of fingers with pathologic FOI findings with the presence of current digital ulcers and/or pitting scars (DU/PS) in the same finger (SSc patients)

From: Disturbed microcirculation in the hands of patients with systemic sclerosis detected by fluorescence optical imaging: a pilot study

  Initial enhancement (IE) Maximum distal distribution (MDD)
Strong signal proximal of fingertip, n (%) n
Missing or insufficient signal in fingertip during entire examination, n (%)
Fingers with current DU/PS 138 84 (60.9%) 143 17 (11.9%)
Fingers without current DU/PS 476 124 (26.1%) 477 9 (1.9%)
p value (Fisher’s exact t test)   p < 0.0001   p < 0.0001
  1. aNote different n (total) for IE and MDD due to six not assessable values for IE