Table 3.
Descriptive and quality measures of 3 different measurement units to measure tattoo colors.
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Values, mean (SD) | Values, median (IQR) | P valuea | AA-ICCb | CA-ICCc | Kendall τ | ||||||||
| Black or gray surface (cm2) | ||||||||||||||
|
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Hand surface (n=19) | .005 | 0.44 | 0.55 | 0.7 | |||||||||
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Self-assessment | 2178 (2078) | 1796 (525-3053) |
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Validation | 986 (968) | 594 (183-1632) |
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Credit card (n=18) | .28 | 0.87 | 0.87 | 0.78 | |||||||||
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Self-assessment | 528 (519) | 277 (139-693) |
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|
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Validation | 460 (532) | 250 (72-858) |
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|
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Body schemes (n=14) | .004 | 0.69 | 0.82 | 0.78 | |||||||||
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Self-assessment | 2986 (3027) | 1663 (920-4123) |
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Validation | 1382 (1731) | 516 (135-2245) |
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| Colored surface (cm2) | ||||||||||||||
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Hand surface (n=17) | .02 | 0.28 | 0.35 | 0.65 | |||||||||
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Self-assessment | 824 (899) | 565 (170-1181) |
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Validation | 320 (321) | 221 (53-472) |
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Credit card (n=16) | .87 | 0.95 | 0.94 | 0.66 | |||||||||
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Self-assessment | 196 (246) | 72 (49-324) |
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Validation | 200 (297) | 50 (21-257) |
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Body schemes (n=12) | .12 | 0.29 | 0.33 | 0.42 | |||||||||
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Self-assessment | 235 (285) | 91 (36-402) |
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Validation | 103 (108) | 68 (12-191) |
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aP values calculated via 2-tailed t tests for dependent samples.
bAA-ICC: absolute agreement intraclass correlation coefficient.
cCA-ICC: consistency of agreement intraclass correlation coefficient.