Table 4 Negative control: outcomes compared 6 − 3 months before index date
From: Impact of Long-COVID in children: a large cohort study
Control group proportion | COVID-19 diagnosed group proportion | Unadjusted RR (CI) | Adjusted OR (CI) | |
|---|---|---|---|---|
Use of medical services 3–6 month before index date | ||||
Primary Physician Visits | 0·38 | 0·43 | 1·09 (1·08, 1·10) | 1·13 (1·11,1·14) |
Specialty Physician Visits | 0·14 | 0·15 | 1·07 (1·04, 1·10) | 1·1 (1·07,1·12) |
ER Visits | 0·02 | 0·03 | 1·05 (0·98, 1·12) | 1·07 (1,1·14) |
Hospital Admissions | 0·01 | 0·01 | 1·08 (0·95, 1·22) | 1·13 (1,1·28) |
Lab Tests | 0·16 | 0·19 | 1·20 (1·17, 1·23) | 1·23 (1·2,1·26) |
Prescriptions | 0·24 | 0·27 | 1·06 (1·05, 1·08) | 1·11 (1·09,1·13) |
New Diagnoses | 0·01 | 0·01 | 0·96 (0·87, 1·06) | 0·99 (0·9,1·1) |
Referrals for Mental Health Services | 0·00 | 0·00 | 0·84 (0·66, 1·04) | 0·85 (0·67,1·08) |