Correction to: Health and Quality of Life Outcomes (2017) 15:247
https://doi.org/10.1186/s12955-017-0815-5
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Unfortunately, the original version of this article [1] contained one error around the EQ-5D visual analogue scale (VAS) scores affecting a few patients.
In Table 4 (Table 1 here), the column presenting the correlations between the FACT-Melanoma (FACT-M) and Merkel cell carcinoma (MCC)-specific scores and the EQ-5D VAS scores have been revised. The corrected table is shown below. None of the interpretation of results or conclusions is affected.
Table 1
Internal consistency reliability and clinical and concurrent validity of the FACT-M and MCC-specific scores in the mMCC population
FACT-M Subscales and Summary scores | # items | Cronbach’s alpha[a] | Scale structure | ECOG PS (mean [SD]) | EQ-5D VAS | EQ-5D index | |||
|---|---|---|---|---|---|---|---|---|---|
Range of item-subscale correlations[b] | Convergent[c]/Divergent[d] validity (% of items) | 0 (n = 39) | 1 (N = 31) | p-value[e] | Correlation[b] | Correlation [b] | |||
FACT-G subscales | |||||||||
Physical well-being (PWB) | 7 | 0.86 | 0.49–0.81 | 100/ 57 | 23.21 (5.02) | 20.10 (6.08) | 0.0221 | 0.59 | 0.75 |
Social/Family well-being (SWB) | 7 | 0.81 | 0.41–0.86 | 100/ 71 | 23.03 (4.78) | 21.49 (5.30) | 0.2065 | 0.19 | 0.24 |
Emotional well-being (EWB) | 6 | 0.83 | 0.53–0.75 | 100/ 67 | 17.97 (4.22) | 16.87 (4.95) | 0.3179 | 0.36 | 0.53 |
Functional well-being (FWB) | 7 | 0.87 | 0.49–0.82 | 100/ 71 | 17.41 (6.68) | 15.48 (5.90) | 0.2113 | 0.44 | 0.63 |
Melanoma-specific subscales | |||||||||
Melanoma Subscale (MS) | 16 | 0.85 | 0.24–0.85 | 75 / 31 | 51.64 (8.93) | 49.10 (9.02) | 0.2427 | 0.55 | 0.75 |
Melanoma surgery Scale (MSS) | 8 | 0.84 | 0.15–0.81 | 88 / 63 | 26.51 (6.19) | 25.58 (6.03) | 0.5290 | 0.26 | 0.51 |
Summary scales | |||||||||
FACT-M TOI | 30 | 0.94 | – | – | 92.26 (18.75) | 84.68 (19.40) | 0.1026 | 0.58 | 0.78 |
FACT-G total score | 27 | 0.94 | – | – | 81.62 (17.25) | 73.95 (17.62) | 0.0713 | 0.50 | 0.67 |
FACT-M total score | 43 | 0.96 | – | – | 133.26 (24.66) | 123.04 (25.21) | 0.0926 | 0.55 | 0.74 |
MCC-Specific scores | |||||||||
Physical function score (PF) | 6 | 0.88 | – | – | 16.38 (5.67) | 13.71 (5.54) | 0.0519 | 0.52 | 0.72 |
Psychological impact score (PI) | 6 | 0.85 | – | – | 17.82 (4.40) | 16.87 (5.18) | 0.4101 | 0.36 | 0.52 |
MCC summary score | 12 | 0.91 | – | – | 34.21 (8.99) | 30.58 (9.94) | 0.1145 | 0.49 | 0.69 |
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