Table 2.
Prevalence ratios of neurologic symptoms in those with and without pre-existing neurologic conditions.
| Symptom | Neurologic preexisting condition | Prevalence estimates | Prevalence ratios | |||
|---|---|---|---|---|---|---|
| Pre-COVID | Post-COVID | Comparison | PR (95% CL) | p-value | ||
| Fever | Neurologic | 4.4% | 0.0% | PreNeuro vs. PreNonNeuro | N/A—Model did not Converge | |
| Non-Neurologic | 0.0% | 4.1% | PostNeuro vs. PostNonNeuro | |||
| Chills | Neurologic | 7.4% | 29.4% | PreNeuro vs. PreNonNeuro | 3.6 (0.9–14.4) | 0.08 |
| Non-Neurologic | 2.1% | 16.6% | PostNeuro vs. PostNonNeuro | 1.8 (1.1–3.0) | 0.03 | |
| Flu-like symptoms | Neurologic | 10.3% | 14.7% | PreNeuro vs. PreNonNeuro | 5.0 (1.3–18.7) | 0.02 |
| Non-Neurologic | 2.1% | 17.9% | PostNeuro vs. PostNonNeuro | 0.8 (0.4–1.6) | 0.56 | |
| Cough | Neurologic | 16.2% | 30.9% | PreNeuro vs. PreNonNeuro | 1.8 (0.9–3.8) | 0.12 |
| Non-Neurologic | 9.0% | 24.8% | PostNeuro vs. PostNonNeuro | 1.2 (0.8–2.0) | 0.35 | |
| Loss of appetite | Neurologic | 7.4% | 33.8% | PreNeuro vs. PreNonNeuro | 10.7 (1.3–89.5) | 0.03 |
| Non-Neurologic | 0.7% | 25.5% | PostNeuro vs. PostNonNeuro | 1.3 (0.9–2.0) | 0.2 | |
| General weakness | Neurologic | 8.8% | 55.9% | PreNeuro vs. PreNonNeuro | 6.4 (1.3–30.9) | 0.02 |
| Non-Neurologic | 1.4% | 61.4% | PostNeuro vs. PostNonNeuro | 0.9 (0.7–1.2) | 0.54 | |
| Fatigue | Neurologic | 32.4% | 88.2% | PreNeuro vs. PreNonNeuro | 2.1 (1.3–3.6) | 0.004 |
| Non-Neurologic | 15.2% | 86.2% | PostNeuro vs. PostNonNeuro | 1.0 (0.9–1.1) | 0.67 | |
| Hair loss | Neurologic | 10.3% | 32.4% | PreNeuro vs. PreNonNeuro | 3.0 (1.0–9.1) | 0.05 |
| Non-Neurologic | 3.5% | 35.2% | PostNeuro vs. PostNonNeuro | 0.9 (0.6–1.4) | 0.69 | |
| Nausea/vomiting | Neurologic | 7.4% | 35.3% | PreNeuro vs. PreNonNeuro | 2.1 (0.6–7.1) | 0.22 |
| Non-Neurologic | 3.5% | 27.6% | PostNeuro vs. PostNonNeuro | 1.3 (0.8–1.9) | 0.25 | |
| Dizziness/lightheadedness | Neurologic | 16.2% | 58.8% | PreNeuro vs. PreNonNeuro | 2.6 (1.1–6.0) | 0.02 |
| Non-Neurologic | 6.2% | 62.1% | PostNeuro vs. PostNonNeuro | 0.9 (0.7–1.2) | 0.66 | |
| Skin rash | Neurologic | 4.4% | 27.9% | PreNeuro vs. PreNonNeuro | 0.6 (0.2–2.2) | 0.49 |
| Non-Neurologic | 6.9% | 21.4% | PostNeuro vs. PostNonNeuro | 1.3 (0.8–2.1) | 0.29 | |
| Trouble sleeping | Neurologic | 41.2% | 70.6% | PreNeuro vs. PreNonNeuro | 1.6 (1.1–2.3) | 0.02 |
| Non-Neurologic | 26.2% | 63.5% | PostNeuro vs. PostNonNeuro | 1.1 (0.9–1.4) | 0.29 | |
| Difficulty staying awake | Neurologic | 5.9% | 42.7% | PreNeuro vs. PreNonNeuro | 1.2 (0.4–4.0) | 0.75 |
| Non-Neurologic | 4.8% | 38.6% | PostNeuro vs. PostNonNeuro | 1.1 (0.8–1.6) | 0.57 | |
| Unrefreshed sleep | Neurologic | 35.3% | 82.4% | PreNeuro vs. PreNonNeuro | 1.4 (0.9–2.2) | 0.11 |
| Non-Neurologic | 24.8% | 72.4% | PostNeuro vs. PostNonNeuro | 1.1 (1.0–1.3) | 0.09 | |
| Concentration/memory difficulties | Neurologic | 14.7% | 86.8% | PreNeuro vs. PreNonNeuro | 2.1 (0.9–4.9) | 0.07 |
| Non-Neurologic | 6.9% | 85.5% | PostNeuro vs. PostNonNeuro | 1.0 (0.9–1.1) | 0.8 | |
| Dysarthria/word finding difficulty | Neurologic | 8.8% | 69.1% | PreNeuro vs. PreNonNeuro | 4.3 (1.1–16.5) | 0.04 |
| Non-Neurologic | 2.1% | 75.2% | PostNeuro vs. PostNonNeuro | 0.9 (0.8–1.1) | 0.37 | |
| Focal weakness | Neurologic | 4.4% | 48.5% | PreNeuro vs. PreNonNeuro | 1.6 (0.4–6.9) | 0.53 |
| Non-Neurologic | 2.8% | 53.1% | PostNeuro vs. PostNonNeuro | 0.9 (0.7–1.2) | 0.54 | |
| Balance/coordination difficulty | Neurologic | 11.8% | 47.1% | PreNeuro vs. PreNonNeuro | 5.7 (1.6–20.8) | 0.009 |
| Non-Neurologic | 2.1% | 42.8% | PostNeuro vs. PostNonNeuro | 1.1 (0.8–1.5) | 0.55 | |
| Numbness/tingling | Neurologic | 17.7% | 57.4% | PreNeuro vs. PreNonNeuro | 4.3 (1.7–10.9) | 0.002 |
| Non-Neurologic | 4.1% | 59.3% | PostNeuro vs. PostNonNeuro | 1.0 (0.8–1.2) | 0.79 | |
| Touch sensitivity | Neurologic | 4.4% | 17.7% | PreNeuro vs. PreNonNeuro | 2.1 (0.4–10.3) | 0.35 |
| Non-Neurologic | 2.1% | 14.5% | PostNeuro vs. PostNonNeuro | 1.2 (0.6–2.3) | 0.55 | |
| Noise sensitivity | Neurologic | 25.0% | 44.1% | PreNeuro vs. PreNonNeuro | 4.5 (2.1–10.0) | <0.001 |
| Non-Neurologic | 5.5% | 42.8% | PostNeuro vs. PostNonNeuro | 1.0 (0.7–1.4) | 0.85 | |
| Light sensitivity | Neurologic | 17.7% | 39.7% | PreNeuro vs. PreNonNeuro | 2.1 (1.0–4.5) | 0.05 |
| Non-Neurologic | 8.3% | 36.6% | PostNeuro vs. PostNonNeuro | 1.1 (0.8–1.6) | 0.65 | |
| See specks or flashes of light | Neurologic | 13.2% | 33.8% | PreNeuro vs. PreNonNeuro | 1.5 (0.7–3.3) | 0.34 |
| Non-Neurologic | 9.0% | 33.1% | PostNeuro vs. PostNonNeuro | 1.0 (0.7–1.5) | 0.92 | |
| Blurred vision | Neurologic | 8.8% | 41.2% | PreNeuro vs. PreNonNeuro | 2.6 (0.8–8.1) | 0.11 |
| Non-Neurologic | 3.5% | 46.2% | PostNeuro vs. PostNonNeuro | 0.9 (0.6–1.2) | 0.5 | |
| Myalgia | Neurologic | 35.3% | 58.8% | PreNeuro vs. PreNonNeuro | 2.8 (1.7–4.9) | <0.001 |
| Non-Neurologic | 12.4% | 55.9% | PostNeuro vs. PostNonNeuro | 1.1 (0.8–1.3) | 0.68 | |
| Arthralgia | Neurologic | 25.0% | 47.1% | PreNeuro vs. PreNonNeuro | 1.2 (0.7–2.0) | 0.48 |
| Non-Neurologic | 20.7% | 47.6% | PostNeuro vs. PostNonNeuro | 1.0 (0.7–1.3) | 0.94 | |
| Headache | Neurologic | 83.8% | 63.2% | PreNeuro vs. PreNonNeuro | N/A - Model did not Converge | |
| Non-Neurologic | 0.0% | 57.2% | PostNeuro vs. PostNonNeuro | |||
| Delirium | Neurologic | 2.9% | 25.0% | PreNeuro vs. PreNonNeuro | N/A - Model did not Converge | |
| Non-Neurologic | 0.0% | 20.7% | PostNeuro vs. PostNonNeuro | |||
| Hallucinations | Neurologic | 1.5% | 2.9% | PreNeuro vs. PreNonNeuro | N/A - Model did not Converge | |
| Non-Neurologic | 0.0% | 8.3% | PostNeuro vs. PostNonNeuro | |||