Table 2 Semi-quantitative risk schedule
Scale | Descriptor | Definition | Example (see Additional file 1 for full descriptions) |
|---|---|---|---|
Level 1 | Minimal Risk | Participant and staff are not in close contact indoors at anytime. No aerosolizing procedures. No processing of biologic samples. | Data collection by phone, in-person survey administration outdoors, LPG fuel delivery |
Level 2 | Moderate Risk | Participant and staff may be in close contact but only for a short period of time. Biologic materials may be processed in the lab. No aerosolizing procedures performed. | Brachial artery reactivity testing, carotid artery reactivity testing, blood pressure measurement, fetal ultrasound, personal exposure assessment in adults, blood collection in adults, urine collection in adults |
Level 3 | High Risk | Participant and staff may be in close contact for a prolonged period of time or an aerosolizing procedure is occuring (e.g. child crying during length measurement) | Anthropometry, collection of blood in children, screening children for pneumonia, lung ultrasound, buccal scrape, nasal brush |
Level 4 | Unacceptable Risk for Research | Participant and staff may be in close contact with patient samples for a prolonged period of time and an aerosolizing procedure is occuring in a manner that staff and participants can not be safely protected. | No HAPIN procedures were deemed Level 4; however, the following procedures would be deemed Level 4 in our framework: bronchoscopy, induced sputum, cardiopulmonary resuscitation (CPR) |