From: Tool to visualize and evaluate operator proficiency in laser hair-removal treatments
 | Prefeedback |  | Postfeedback |  |
---|---|---|---|---|
 | (mean ± SD) | P | (mean ± SD) | P |
δz [%] | -2.87 ± 8.50 | 0.445 | +2.06 ± 12.80 | 0.710 |
δ0 [%] | +5.40 ± 6.78 | 0.108 | +3.76 ± 13.31 | 0.520 |
μ [mm] | +1.63 ± 1.58 | 0.053 | +0.16 ± 1.45 | 0.794 |
υ [%] | +7.21 ± 5.79 | 0.028* | +5.69 ± 5.79 | 0.146 |