Table 1: Definition and modalities of variables.

Variables	Definition	Modalities
Qualification of workers	Worker who have received basic training in a medical or paramedical training school	Yes/No
Staff trained in sterilization procedures	Existence of a sterilization training certificate or a diploma after trainings	Yes/No
Availability of workers	Three (03) or more workers are present every day for sterilisation activities	Yes/No
Knowledge of sterilization procedures	Worker knows in the required order of the steps of sterilization	Yes/No
Observance of steps of sterilization	In practice, the agent follows the normal order of the sterilization process	Yes/No
Performance	The worker knows and respects the different steps of sterilization	Yes/No
Choice of sterilization method	The agent knows how to choose the method of sterilization depending on the nature of the material, packaging, destination and level of treatment required	Yes/No
Choice of sterilization cycle	The worker knows how to choose sterilization cycle based on the level of treatment required	Yes/No
Physical sterilization control	The responsible of the unit controls the time, temperature and pressure according to the sterilizing cycle	Yes/No
Physico-chemical sterilization control	The responsible of the unit checks the strips bend at the end of the sterilization process	Yes/No
Bacteriological control of sterilization	Presence or absence of germ on the sterilized equipment	Yes/No
Water control for sterilization	Existence of report on the quality of water used during sterilization process	Yes/No
Air control for sterilization	Existence of the air monitoring report during sterilization process	Yes/No
Access to sterilization unit	Access to service is limited	Yes/No