Table 4.

Variables in the NHLS National HIV Cohort

Variable	Description	Per cent completeness of variable (%)
BU_uniq_ID	Unique patient identifier	100
Episode_no	NHLS Episode identifier	100
Sex	Sex	98.0
Age	Age at testing date (years)	91.6
Province	Province of health facility where specimen was taken	99.8
District	District of health facility	99.8
Local_municipality	Local municipality of health facility	99.8
Facility	NHLS facility code of health facility	99.8
Ward	NHLS ward code of ward at health facility	99.8
Test_name	Type of test (eg, CD4, VL)	100
Test_date	Date of test	100
Test_result	Test result	100

NHLS, National Health Laboratory Service; VL, viral load.