Variables HADS-A HADS-D Univariate (Pearson) Multiple linear regression Univariate (Pearson) Multiple linear regression Pearson CC Pearson value β (95% CI) valuePearson CC Pearson value β (95% CI) valueSex — — −0.32 (−1.35, 0.70) 0.534 — — 0.12 (−0.59, 0.83) 0.746 Age −0.3265 <0.001 −0.17 (−0.23, −0.097) <0.001 −0.0464 0.5227 −0.016 (−0.067, 0.034) 0.523 Symptoms of Hairdex 0.4011 <0.001 0.34 (0.23, 0.045) <0.001 0.3409 <0.001 0.19 (0.12, 0.28) <0.001 Function of Hairdex 0.4120 <0.001 0.21 (0.15, 0.28) <0.001 0.3123 <0.001 0.11 (0.064, 0.16) <0.001 Emotions of Hairdex 0.4851 <0.001 0.18 (0.13, 0.22) <0.001 0.3473 <0.001 0.089 (0.055, 0.12) <0.001 Self-confidence of Hairdex −0.0018 0.9798 −0.00042 (−0.033, 0.032) 0.980 0.0377 0.6038 0.0060 (−0.017, 0.029) 0.604 Stigmatisation of Hairdex 0.4038 <0.001 0.19 (0.13, 0.26) <0.001 0.2210 0.0021 0.076 (0.028, 0.12) 0.002 WHOQOL-BREF −0.43 <0.001 −0.029 (−0.039, −0.021) <0.001 −0.3613 <0.001 −0.018 (−0.024, −0.011) <0.001 Physical health of WHOQOL-BREF −0.3175 <0.001 −0.093 (−0.13, −0.053) <0.001 −0.2617 0.0002 −0.053 (−0.081, −0.025) <0.001 Psychological of WHOQOL-BREF −0.2648 0.0002 −0.073 (−0.11, −0.035) <0.001 −0.2691 0.0002 −0.052 (−0.078, −0.025) <0.001 Social relationships of WHOQOL-BREF −0.4476 <0.001 −0.088 (−0.11, −0.063) <0.001 −0.3760 <0.001 −0.052 (−0.069, −0.033) <0.001 Environment of WHOQOL-BREF −0.4127 <0.001 −0.096 (−0.13, −0.066) <0.001 −0.3236 <0.001 −0.052 (−0.074, −0.030) <0.001 DLQI 0.3360 <0.001 0.26 (0.17, 0.38) <0.001 0.1602 0.0264 0.089 (0.011, 0.17) 0.026 Symptoms and feelings of DLQI 0.3503 <0.001 1.06 (0.65, 1.47) <0.001 0.1824 0.0113 0.39 (0.088, 0.68) 0.011 Daily activities of DLQI 0.2885 <0.001 0.89 (0.47, 1.31) <0.001 0.1290 0.0746 0.28 (−0.028, 0.58) 0.075 Leisure of DLQI 0.2296 0.0014 0.62 (0.24, 0.99) 0.001 0.0933 0.1982 0.17 (−0.092, 0.44) 0.198 Work and school of DLQI 0.2262 0.0016 1.11 (0.43, 1.79) 0.002 0.1682 0.0197 0.57 (0.093, 1.06) 0.020 Personal relationships of DLQI 0.1803 0.0124 0.74 (0.16, 1.32) 0.012 0.0760 0.2945 0.22 (−0.19, 0.63) 0.294 Treatment of DLQI 0.2238 0.0018 1.39 (0.52, 2.26) 0.002 0.0690 0.3413 0.29 (−0.32, 0.92) 0.341