110 CHAPTER 6 Table 6.1: Characteristics of questionnaire respondents n =181. (continued) Respondents (%) Frequency of use Daily 41 (22.7) Weekly 71 (39.2) Monthly 35 (19.3) A few times a year 32 (17.7) Never 2 (1.1) Working with telemedicine organization < 6 months 6 (3.3) 6-12 months 21 (11.6) 1-3 years 54 (29.8) 3-5 years 32 (17.7) > 5 years 68 (37.6) Self-reported computer skills Poor 6 (3.3) Sufficient 65 (35.9) Good 80 (44.2) Excellent 30 (16.6) a Total response percentage exceeds 100% due to multiple answers allowed. At least five respondents rated each questionnaire item as “NA,” with the highest percentage for Q17 (72%). Eighteen items had ≥25% “NA” responses which mostly related to the “organization” and “working conditions” themes. Roughly a quarter of the respondents (25%) indicated that Q30 was “NA” of whom 18% were GPs. Optometrists answered only five questions with ≥25% “NA.” HCPs’ remarks and suggestions for improvement mainly concerned employee and payment-related questions. These questions had a high percentage of “NA” as respondents did not feel they were employees of the telemedicine organization but consider the organization as a supply partner. Merely 6% of the respondents consider the telemedicine organization as their employer. Statistical analysis Spearman’s rank correlation coefficient indicated five items as redundant. None of the items were extremely skewed. Three payment questions were completed by <95% of the respondents (62%) and therefore excluded from psychometric analyses. Responses to five items did not comply with the standard answering format and 12 general questions were removed before psychometric analysis. The remaining data set consisted of 41 psychometric items (Appendix 6.1 presents the Dutch original items). Ten out of 12 “not
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