“Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples
Abstract Objective: To determine the test‐retest repeatability of a self‐completed survey with items capturing skin cancer risk factors. Methods: We invited 238 randomly selected participants of the QSkin II cohort to complete the baseline survey a second time. Responses were compared using kappa st...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-10-01
|
| Series: | Australian and New Zealand Journal of Public Health |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/1753-6405.13147 |
| _version_ | 1797721901979664384 |
|---|---|
| author | Alexandra Mortimore Nirmala Pandeya Catherine M. Olsen David C. Whiteman |
| author_facet | Alexandra Mortimore Nirmala Pandeya Catherine M. Olsen David C. Whiteman |
| author_sort | Alexandra Mortimore |
| collection | DOAJ |
| description | Abstract Objective: To determine the test‐retest repeatability of a self‐completed survey with items capturing skin cancer risk factors. Methods: We invited 238 randomly selected participants of the QSkin II cohort to complete the baseline survey a second time. Responses were compared using kappa statistics and intraclass correlation coefficients to quantify agreement for categorical and continuous variables, respectively. We compared the performance of key items with that observed in an earlier repeatability study using the same survey instrument in an independent cohort. Results: Measures of phenotypic characteristics had moderate to almost‐perfect test‐retest repeatability (e.g. eye colour weighted kappa (κw) = 0.87, 95% confidence interval [CI]: 0.81, 0.92). Items measuring sun exposure showed lower agreement (κw range 0.36‐0.54) compared with phenotypic characteristics (κw range 0.59‐0.87). Items relating to treatment of skin cancers demonstrated almost‐perfect test‐retest repeatability (e.g. excisions for skin cancers κw 0.85, 95%CI: 0.80, 0.89). In aggregate, the repeatability of key items was very similar across the two independent repeatability samples. Conclusion: Fair to almost‐perfect repeatability for self‐reported skin cancer risk factors was robust across independent and temporally distant cohorts. Implications for public health: These self‐assessed risk factors for skin cancer are repeatable and suitable for use in clinical practice and research. |
| first_indexed | 2024-03-12T09:39:47Z |
| format | Article |
| id | doaj.art-18d355d94e014e0289e79fe94ec155fd |
| institution | Directory Open Access Journal |
| issn | 1326-0200 1753-6405 |
| language | English |
| last_indexed | 2024-03-12T09:39:47Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Australian and New Zealand Journal of Public Health |
| spelling | doaj.art-18d355d94e014e0289e79fe94ec155fd2023-09-02T13:18:00ZengElsevierAustralian and New Zealand Journal of Public Health1326-02001753-64052021-10-0145546947310.1111/1753-6405.13147“Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samplesAlexandra Mortimore0Nirmala Pandeya1Catherine M. Olsen2David C. Whiteman3Cancer Control Group QIMR Berghofer Medical Research Institute QueenslandCancer Control Group QIMR Berghofer Medical Research Institute QueenslandCancer Control Group QIMR Berghofer Medical Research Institute QueenslandCancer Control Group QIMR Berghofer Medical Research Institute QueenslandAbstract Objective: To determine the test‐retest repeatability of a self‐completed survey with items capturing skin cancer risk factors. Methods: We invited 238 randomly selected participants of the QSkin II cohort to complete the baseline survey a second time. Responses were compared using kappa statistics and intraclass correlation coefficients to quantify agreement for categorical and continuous variables, respectively. We compared the performance of key items with that observed in an earlier repeatability study using the same survey instrument in an independent cohort. Results: Measures of phenotypic characteristics had moderate to almost‐perfect test‐retest repeatability (e.g. eye colour weighted kappa (κw) = 0.87, 95% confidence interval [CI]: 0.81, 0.92). Items measuring sun exposure showed lower agreement (κw range 0.36‐0.54) compared with phenotypic characteristics (κw range 0.59‐0.87). Items relating to treatment of skin cancers demonstrated almost‐perfect test‐retest repeatability (e.g. excisions for skin cancers κw 0.85, 95%CI: 0.80, 0.89). In aggregate, the repeatability of key items was very similar across the two independent repeatability samples. Conclusion: Fair to almost‐perfect repeatability for self‐reported skin cancer risk factors was robust across independent and temporally distant cohorts. Implications for public health: These self‐assessed risk factors for skin cancer are repeatable and suitable for use in clinical practice and research.https://doi.org/10.1111/1753-6405.13147melanomaskin cancersurveyrepeatabilityvalidity |
| spellingShingle | Alexandra Mortimore Nirmala Pandeya Catherine M. Olsen David C. Whiteman “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples Australian and New Zealand Journal of Public Health melanoma skin cancer survey repeatability validity |
| title | “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples |
| title_full | “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples |
| title_fullStr | “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples |
| title_full_unstemmed | “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples |
| title_short | “Repeatability of Repeatability”: the stability of self‐reported melanoma risk factors in two independent samples |
| title_sort | repeatability of repeatability the stability of self reported melanoma risk factors in two independent samples |
| topic | melanoma skin cancer survey repeatability validity |
| url | https://doi.org/10.1111/1753-6405.13147 |
| work_keys_str_mv | AT alexandramortimore repeatabilityofrepeatabilitythestabilityofselfreportedmelanomariskfactorsintwoindependentsamples AT nirmalapandeya repeatabilityofrepeatabilitythestabilityofselfreportedmelanomariskfactorsintwoindependentsamples AT catherinemolsen repeatabilityofrepeatabilitythestabilityofselfreportedmelanomariskfactorsintwoindependentsamples AT davidcwhiteman repeatabilityofrepeatabilitythestabilityofselfreportedmelanomariskfactorsintwoindependentsamples |