Table 2.
Baseline characteristics of the participants
| n (%) | |
|---|---|
| Age, mean±SD | 22.74±0.07 (1–89 years) |
| DPH alone (OTC) | 31,239 (58.1) |
| DPH alone (prescription) | 1988 (3.7) |
| DPH alone (unknown if OTC or prescription) | 20,534 (38.2) |
| Reason of exposure | |
| Adverse reaction | 1142 (2.1) |
| Intentional | 35,473 (66) |
| Unintentional | 16,445 (30.6) |
| Other (contamination/tampering, malicious, withdrawal) | 55 (0.1) |
| Unknown | 646 (1.2) |
| Total | 53,761 (100) |
| Outcome | |
| Major | 2288 (4.2) |
| Moderate | 20,108 (37.4) |
| Minor | 28,382 (52.8) |
| Unable to follow | 2983 (5.5) |
| Total | 53,761 (100) |
| Chronicity | |
| Acute | 50,367 (93.7) |
| Acute on chronic | 1628 (3.0) |
| Chronic | 832 (1.5) |
| Unknown | 934 (1.7) |
| Total | 53,761 (100) |
| Formulation | |
| Aerosol/mist/spray/gas | 142 (0.3) |
| Cream/lotion/gel | 466 (0.9) |
| Liquid | 10,610 (19.7) |
| Patch | 8 (0.0) |
| Powder/granules | 125 (0.2) |
| Solid (tablets/capsules/caplets) | 41,190 (76.6) |
| Other | 103 (0.2) |
| Unknown | 1117 (2.1) |
| Total | 53,761 (100) |
DPH=Diphenhydramine, OTC=Over the counter, SD=Standard deviation