Table 3.

(Doffing): Checklist of PPE Donning and Doffing Key Steps and Their Respective Scores

Step	Content (score: n points)	Score
17	Perform hand hygiene (1 point) Two people spray each other with sodium hypochlorite disinfectant to disinfect the surface of the outer splash-resistant gown and hood (2 points)
18	Perform Hand Hygiene (1 point) Remove splash-resistant gown and outer gloves (3 points)
19	Perform hand hygiene (1 point) Check the airtightness of gloves (2 points) Wear gloves (2 points)
20	Take off the outer layer of the waterproof boot cover (2 points)
21	Perform hand hygiene (1 point) Enter the second shift strip room, remove the hood carefully (by yourself or with the help of your assistant, and be careful not to touch the contaminated part of the hood (3 points)
22	After performing hand hygiene, remove the PAPR (3 points) Unfasten the belt, place the belt and power supply on the table covered with disposable towels (2 points), and put into a double-layer bag (3 points)
23	Perform hand hygiene (1 point) take off outer gloves (2 points)
24	Performs hand hygiene (1 point) take off the protective cover-all with hood and boot cover, tear off the glue, unzip the zipper, and remove it from the hat (3 points)
25	Perform hand hygiene (1 point) Change work shoes (2 points)
26	Perform hand hygiene (1 point) Take off N95 respirator: first remove the lower fixed rope, and then loosen the upper fixed rope (3 points)
27	Perform hand hygiene (1 point) Remove the disposable hat (2 points) Remove inner gloves (2 points)
28	Perform hand hygiene (1 point) Enter the shower, change new hand washing clothes after taking a shower (oral), change personal clothes (2 points)
29	In principle, the protective equipment for high-risk medical staff should not exceed 4 hours per shift (oral) (2 points)
30	Total score