Table 3. Change in Volume of Eating Disorder Hospitalizations Among Females Aged 12 to 17 Years Comparing the Expected Rate From Prepandemic Trends With the Observed Rate at the 1-, 2-, and 3-Year Mark of the COVID-19–Prevalent Period.
| Region, time since pandemic starta | Expected rate, per 100 000 population (95% CI)b | Observed rate, per 100 000 population | Rate ratio |
|---|---|---|---|
| Quebec | |||
| 1 y | 8.34 (6.73-9.96) | 18.12 | 2.17 |
| 2 y | 8.26 (6.32-10.21) | 10.37 | 1.26 |
| 3 y | 8.18 (5.88-10.48) | 11.56 | 1.41 |
| Ontario | |||
| 1 y | 6.77 (5.75-7.79) | 16.55 | 2.44 |
| 2 y | 6.83 (5.58-8.09) | 10.39 | 1.52 |
| 3 y | 6.89 (5.38-8.40) | 8.57 | 1.24 |
| Prairies | |||
| 1 y | 3.04 (2.12-5.68) | 7.27 | 2.39 |
| 2 y | 3.00 (1.90-4.10) | 7.13 | 2.38 |
| 3 y | 2.96 (1.67-4.25) | 2.30 | 0.78 |
| British Columbia | |||
| 1 y | 7.65 (5.68-9.62) | 15.41 | 2.02 |
| 2 y | 7.78 (5.36-10.20) | 8.02 | 1.03 |
| 3 y | 7.92 (5.00-10.84) | 3.24 | 0.41 |
a
Start of pandemic indicates the 4-week period from March 1 to 28, 2020.
b
Expected refers to counterfactual. Expected vs fitted rates are presented in eTable 5 in Supplement 1.