3.2 Comparison of post-infection symptoms
By comparing the occurrence of various symptoms in the two groups, it was found that there were differences in the symptoms of the two groups after infection with the novel coronavirus. Taking into account the differences in baseline conditions between the two groups, factors that differed between the two groups, such as whether they had been vaccinated, combined with hypertension, diabetes, tumours and novel coronavirus infection typing, were adjusted using multi-factor logistic regression and a forest plot of the adjusted ORs was drawn. The results showed that the renal transplant population was less likely to have shortness of breath (OR: 0.315, 95% CI: 0.178-0.557, P =0.000), cough (OR: 0.445, 95% CI: 0.228-0.868, P =0.018) and headache (OR: 0.445, 95% CI: 0.215-0.921, P =0.029) than the general population. As shown in Figure 2, although there was no difference in the incidence of febrile symptoms between the two groups, there were differences in maximum temperature and number of days of fever. The mean maximum fever temperature in the general population group was 38.87°C, slightly higher than in the renal transplant group (38.46°C), with a statistically significant difference between the two groups (P <0.001); whereas the duration of fever in the two groups was not significantly different by non-parametric tests.