Material method
This cross-sectional study was conducted with the patients diagnosed with COVID-19 who received inpatient treatment in December 2020 at the pandemic service of Elazig Fethi Sekin City Hospital in Turkey. The ethical approval was obtained with the decision No: 2021/01-31 of the Ethics Committee of Fırat University and the decision No:2021-01-13T12_58_32 of the Ministry of Health. Especially, the patients with multiple symptoms were identified. The patients were reached by phone and face-to-face interviews were provided. It took 20-25 minutes for each person to complete the form. The demographics of the people were recorded. With the questionnaire arranged with the known COVID-19 symptoms, elective questions were asked about how long these symptoms persisted after treatment.
Each of the common symptoms was examined separately (16 questions). As the last question, the participants were asked if there were any symptoms that were not included in the questionnaire, which they thought developed after COVID-19 treatment. Also, they were also asked to state in writing whether they had been applied to the hospital for this reason. The most frequently given answer was included in the survey items (17. question). The symptom persistance duration in the survey questions were determined by taking into account the symptoms onset time and the average duration of treatment. To provide the reliability of the answers, the illiterate patients, patients with communication problems and patients diagnosed with dementia were not included in the study. The data obtained were statistically analyzed using Microsoft Excel and SPSS program; and charted by using the Python 3.0 Seaborn library.