Table 5.
Loadings of an exploratory factor analysis of post-acute symptoms among COVID-19 cases (n = 774). The analysis includes symptoms with increased risk among COVID-19 cases 11–12 months after diagnosis. The table shows standardized loadings from the pattern matrix using an oblimin rotation, allowing correlation between factors. The two factors explained 33% and 17% (in total 50%) of the variance in symptoms.a
| Factor 1 | Factor 2 | |
|---|---|---|
| Brain fog | 0.95 | − 0.11 |
| Poor memory | 0.82 | 0.10 |
| Dizziness | 0.81 | − 0.11 |
| Heart palpitations | 0.74 | 0.05 |
| Fatigue | 0.62 | 0.30 |
| Headache | 0.57 | 0.18 |
| Skin rash | 0.45 | 0.02 |
| Anxiety | 0.41 | 0.15 |
| Altered smell or taste | 0.34 | 0.07 |
| Chest pain | 0.21 | 0.45 |
| Shortness of breath | 0.02 | 0.96 |
| Reduced lung function | 0.02 | 0.58 |
| Cough | − 0.05 | 0.60 |
aWe omitted rare occurrences (myocarditis, kidney disease) and symptoms with no increased risk (based on adjusted RR) among COVID-19 cases 11–12 months after infection (depression, mood swings, sleep problems, joint pain, muscle pain, fever, and hair loss)