Seasonal Variation in the Number of Plantar Fasciitis Cases and in the Search Volume Data by Naver from 2016 to 2019 Using the Cosinor Analysis
| Variable | Amplitude | Phase month | Low point month | p-value |
|---|---|---|---|---|
| No. of plantar fasciitis cases | 8,523.97 | 7.9 | 1.9 | <0.001 |
| RSV of “Plantar fasciitis” | 14.15 | 6.9 | 0.6 | <0.001 |
| RSV of “Heel pain” | 9.69 | 7.1 | 1.1 | <0.001 |
RSV: relative search volume.
