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Table 2 Field assessment of remotely collected palm data

From: Landscape disturbance impacts on Attalea butyracea palm distribution in central Panama

Total field sample (n = 86)
  Remotely sensed A. butyracea
  YES NO Total
  Field-verified A. butyracea YES 40 15 55
NO 10 21 31
Total 50 36 86
Sensitivity: 0.73 Specificity: 0.68 aPPV: 0.8 bNPV: 0.58
Pasture sample (n = 54)
  Remotely sensed A. butyracea
  YES NO Total
  Field-verified A. butyracea YES 25 3 28
NO 9 17 26
Total 34 20 54
Sensitivity: 0.89 Specificity: 0.65 aPPV: 0.74 bNPV: 0.85
Canopy sample (n = 32)
  Remotely sensed A. butyracea
  YES NO Total
  Field-verified A. butyracea YES 15 12 27
NO 1 4 5
Total 16 16 32
Sensitivity: 0.56 Specificity: 0.8 aPPV: 0.94 bNPV: 0.25
  1. aPositive predictive value
  2. bNegative predictive value