Cross-cultural Adaptation and Validation of the "Cold Intolerance Symptom Severity Questionnaire" (CISS) and the "Potential Work Exposure Scale" (PWES) in Patients With Hand Pathologies.

This study in the first part has a cross-cultural adaptation design. The investigators will use the CISS questionnaire modified by Ruijs, because the total score is between 0 and 100. For the PWES questionnaire the investigators will use the original version .For translation and cross-cultural adaptation, no consensus exists. The investigators choose the guidelines of AAOS outcomes committee which are widely used and accepted in the literature.

The following five steps will be documented in a written report: (1) forward translation from English to French by two translators whose native language is French and fluent in English (T1 and T2). One of the translators is informed about the aims of the study and the other received only limited information (so-called naive translator).Moreover, none of the translators are physicians. (2) Synthesis of T1 and T2 will be done to form a unique translated version T12 by resolving any discrepancies under supervision of a methodologist not involved in the translation process. (3) Back translation of the T12 version from French to English by two English native speaking who are fluent in French (BT1 and BT2). These two translators are naive to the study and not linked to the medical domain. (4) Consensus meeting with all the involved subjects (translators, methodologist, specialist physicians in rehabilitation) in order to resolve any discrepancies and doubts met during the translation and to establish the pre final French version of the CISS and PWES (5).

The investigators will verify content validity which is the ability to an instrument to reflect the domain of interest and the conceptual definition of a construct i.e. cold intolerance. For this purpose, the instructions, response format and the items of F-CIIS and F-PWES questionnaire will be evaluated by a panel of 10 people for conceptual equivalence (clarity). The expert panel will have knowledge's about the content areas of the construct of the questionnaire and the target population of the questionnaire. The mother language tongue of the expert panel is French. The experts have to rate if instructions, response format and items are clear or unclear. If unclear they are asked to provide suggestions for making the language clearer. If instructions, response format and items are found to be unclear by at least 20 % of the panel, they have to be revised. The minimum inter rater agreement among the experts panel is 80%.

Then the expert panel evaluate each item of the instrument for content equivalence, using the following scale (1=not relevant, 2=somewhat relevant, 3=quite relevant, 4=highly relevant). Items classified as 1 or 2 should be revised. Content validity index at the item level (I-CVI) and at the scale level (S-CVI) should be calculated. The averaging calculation of S-CVI (S-CVI/Ave) is the preferred method. With 10 experts, the I-CVI of 0.78 or above and an S-CVI/Ave of 0.90 or above are the minimum acceptable indices. Items that do not achieve the minimum acceptable indices are revised and re-evaluated.

This part of the study which not concerned patients run from November 2019 to September 2020.