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Table 2 Morphological findings of the nailfold capillary microscopy test (non-VWF vs. VWF)

From: Nailfold capillary microscopy for evaluating hand-arm vibration syndrome

Microscopic findings Non-VWF (n = 44) VWF (n = 18) pvalue* Adjustedpvalue
  Tortuous 2.11 ± 2.13 1.94 ± 2.34 0.783 0.464
  Crossing 3.61 ± 3.03 5.89 ± 3.79 0.015 0.915
  Bushy 0.14 ± 0.90 0.00 ± 0.00 0.527 -
  Meandering 0.27 ± 1.09 0.11 ± 0.32 0.539 0.953
Morphology Branching 1.02 ± 1.49 0.28 ± 0.75 0.012 0.142
  Hemorrhage 0.00 ± 0.00 0.00 ± 0.00 - -
  Avascular area 0.66 ± 0.96 0.72 ± 0.89 0.812 0.562
  Enlarged 1.64 ± 2.24 1.89 ± 2.05 0.682 0.714
  Giant 0.00 ± 0.00 0.00 ± 0.00 - -
Combined count Abnormal capillary (including crossing) 3.80 ± 2.96 6.00 ± 3.66 0.016 0.933
Abnormal capillary (excluding crossing) 1.11 ± 1.62 0.33 ± 0.77 0.013 0.184
Average density (capillary number/mm) 6.70 ± 0.92 6.69 ± 1.06 0.970 0.764
  1. Unit: capillary number.
  2. *t test.
  3. Adjusted for age, smoking status, and diseases using analysis of covariance.
  4. Abbreviations: Non-VWF non- vibration-induced white finger, VWF vibration-induced white finger.