| Column name |  | 
		
			| id_event |  | 
		
			| domain | = 'APPOINTMENT' | 
		
			| category | = 'SAMPLE' | 
		
			| event_type | = APP_TEST_HIV (for test HIV)
 APP_PTVSAMPLE (for exams in PTV)
 EXAMS (for all the other examinations)
 | 
		
			| id_person | unique id for patient | 
		
			| date_start | date of prescription | 
		
			| date_apt_exe | date of sample (appointment execution date) | 
		
			| ev_vd1 | completation date | 
		
			| ev_vd2 | date when was sent to laboratory | 
		
			| date_event | date of results | 
		
			| date_apt | date of the appointment | 
		
			| event_status | status of the appointment | 
		
			| ev_vm2 |  | 
		
			| ev_vd3 |  | 
		
			| ev_vn1 | Laboratory's NID | 
		
			| ev_vm1 | note | 
		
			|  |  | 
		
			| ev_vt1 | status of examination: SP_MANCATO = appointment is missed
 SP_PRELIEV  = waiting for sample
 SP_REFERTO = sample done, waiting for a result
 SP_COMPLET = examination is complete, result is received
 SP_REJECT = sample rejected by LAB
 | 
		
			| ev_vt2 |  | 
		
			| ev_vt3 |  | 
		
			| ev_vt4 |  | 
		
			| ev_vt5 |  | 
		
			| usr_ins |  | 
		
			| usr_mod |  | 
		
			| usr_datamod |  | 
		
			| deleted |  |