TABLE A1.
Pooled monthly visit counts and incident rate ratios, all pediatric mental health visits
| ALL PEDIATRIC MENTAL HEALTH VISITS | 2020 | 2021 | ||
|---|---|---|---|---|
| Count | IRR (95% CI) | Count | IRR (95% CI) | |
| January | 1886 | (reference) | 1687 | 0.89 (0.84–0.96) |
| February | 2018 | 1.07 (1.00–1.14) | 1910 | 1.01 (0.95–1.08) |
| March | 1435 | 0.76 (0.71–0.81) | 2228 | 1.18 (1.11–1.26) |
| April | 829 | 0.44 (0.41–0.48) | 2332 | 1.24 (1.16–1.31) |
| May | 1181 | 0.63 (0.58–0.67) | 2343 | 1.24 (1.17–1.32) |
| June | 1204 | 0.64 (0.59–0.69) | 1835 | 0.97 (0.91–1.04) |
| July | 1342 | 0.71 (0.66–0.76) | 1659 | 0.88 (0.82–0.94) |
| August | 1455 | 0.77 (0.72–0.83) | 1850 | 0.98 (0.92–1.05) |
| September | 1831 | 0.97 (0.91–1.04) | 2455 | 1.30 (1.23–1.38) |
| October | 1887 | 1.00 (0.94–1.07) | 2334 | 1.24 (1.16–1.31) |
| November | 1770 | 0.94 (0.88–1.00) | 2295 | 1.22 (1.14–1.29) |
| December | 1546 | 0.82 (0.77–0.88) | 1955 | 1.04 (0.97–1.10) |
Note: Table reports pooled visit counts across 107 emergency departments in the Clinical Emergency Data Registry in 2020 and 2021. IRRs are reported against January 2020 reference. CIs are adjusted for clustering within EDs.
Abbreviations: CEDR, Clinical Emergency Data Registry; CI, confidence interval; ED, emergency department; IRRs, incident rate ratios; LOS, length of stay.