2.1.1. Population and Data Collection

The study featured a survey conducted on the patients of the CortenMedic primary healthcare facilities. This preliminary study was aimed at preparing and checking the remote healthcare quality research tool—the structured questionnaire. It was important to explore the data structure and prepare a questionnaire for population studies [66]. The response rate meets all survey standards of at least 60% [67]. The questionnaire was assessed in terms of question comprehensibility and difficulty, clarity and ambiguity, length, completion time, and data collection manner [68].

The research was carried out in four primary healthcare facilities in Poland considering the limitations introduced during the pandemic. One of the facilities is located in Radom, a large district city in Poland. The remaining three (Warsaw 1, Warsaw 2, Warsaw 3) are located in Warsaw, the capital city of Poland. The total number of basic care patients registered in these facilities amounts to 46,700.

The data was collected during two sessions: on 25 February 2021–26 February 2021 and 11 March 2021–12 March 2021 through an anonymous survey with closed-ended questions. The randomly selected adult patients, who used telephone consultations during the pandemic, were surveyed using the computer-assisted telephone interviewing (CATI) method; an interviewer presented survey questions to the patients and collected their answers. All patients who agreed to take part in the survey were included in the study. Completed questionnaires were returned to the researchers who conducted the survey. One hundred five patients participated in the study, six patients declined and did not complete the questionnaire. One record was deleted due to more than 20% of missing data. Ninety-eight complete records were included in the study, representing a response rate of 93%. The survey structure presenting the place and date of data collection is shown in Table 1.


**Table 1.** Structure of the survey responses.
