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Table 2 Self-report survey variables crosstabulated by Melanoma type and depth

From: Patient-identified early clinical warning signs of nodular melanoma: a qualitative study

Variable, % (n) Nodular Melanoma Superficial Spreading Melanoma
≤ 2 mm (n = 16) >  2 mm (n = 18) ≤ 2 mm (n = 23) >  2 mm (n = 9)
Physical signs in 12 months pre- diagnosis (checked all that applya)
 Itching 12.5 (2) 22.2 (4) 17.4 (4) 44.4 (4)
 Bleeding 12.5 (2) 22.2 (4) 17.4 (4) 44.4 (4)
 Irritationb 12.5 (2) 33.3 (6) 4.3 (1) 66.7 (6)
 Tendernessb 0.0 (0) 38.9 (7) 4.3 (1) 55.6 (5)
 Painb 6.3 (1) 33.3 (6) 4.3 (1) 55.6 (5)
 Discharge 0.0 (0) 5.6 (1) 4.3 (1) 11.1 (1)
 Peeling 0.0 (0) 33.3 (6) 4.3 (1) 11.1 (1)
Who discovered the melanoma?
 Self or partner 50.0 (8) 76.5 (13) 39.1 (9) 87.5 (7)
 Friend or colleague 0.0 (0) 11.8 (2) 8.7 (2) 0.0 (0)
 Primary care physician 12.5 (2) 0.0 (0) 13.0 (3) 0.0 (0)
 Nurse or physician assistant 0.0 (0) 0.0 (0) 4.3 (1) 0.0 (0)
 Dermatologist 31.3 (5) 5.9 (1) 26.1 (6) 0.0 (0)
 Another professional 6.3 (1) 5.9 (1) 8.7 (2) 12.5 (1)
Confidence differentiating healthy and problematic moles?
 Not at all confident 25 (4) 44.4 (8) 17.4 (4) 33.3 (3)
 A little confident 18.8 (3) 22.2 (4) 47.8 (11) 33.3 (3)
 Somewhat confident 18.8 (3) 11.1 (2) 13.0 (3) 22.2 (2)
 Quite confident 31.3 (5) 16.7 (3) 13.0 (3) 11.1 (1)
 Extremely confident 6.3 (1) 5.6 (1) 8.7 (2) 0.0 (0)
“I am someone who pays attention to my health”
 Disagree 0.0 (0) 5.6 (1) 0.0 (0) 22.2 (2)
 Neither agree or disagree 12.5 (2) 22.2 (4) 17.4 (4) 0.0 (0)
 Agree 31.3 (5) 50.0 (9) 39.1 (9) 33.3 (3)
 Strongly agree 56.3 (9) 22.2 (4) 43.5 (10) 44.4 (4)
  1. aThe percentages do not add to 100% within each thickness group because the respondents were instructed to select all of the symptoms they had experienced from a list of possible symptoms
  2. bWe found statistically significant differences between the four thickness groups