Validation of human immunodeficiency virus diagnosis codes among women enrollees of a U.S. health plan

Table 1 Characteristics of women with ≥ 1 HIV diagnosis code during 2010–2020 at Kaiser Permanente Washington

Patient Characteristic	N = 272 n (%)
Age at first HIV diagnosis code, years
Mean (standard deviation)	41.2 (13.1)
Median (interquartile range)	40 (32–49)
18–29	45 (16.5)
30–39	89 (32.7)
40–49	77 (28.3)
50–59	37 (13.6)
≥60–89	24 (8.8)
Race/ethnicity^a,b
Hispanic	24 (10.4)
Native American/Alaska Native	0 (0.0)
Non-Hispanic Black	98 (42.6)
Non-Hispanic White	89 (38.7)
Multiple Races/Other Race	19 (8.3)
Unknown	42
Insurance at the time of the first HIV diagnosis code
Medicaid	15 (5.5)
Medicare	21 (7.7)
Commercial/private payer	236 (86.8)
Year of first HIV diagnosis code
2010–2014	129 (47.4)
2015–2020	143 (52.6)
Duration of follow-up, years^c
Mean (standard deviation)	3.1 (3.0)
Median (interquartile range)	2.0 (0.9–3.9)
0 to < 1 year	115 (27.2)
1 to < 3 years	105 (38.6)
3 to < 5 years	40 (14.7)
≥5 years	53 (19.5)

^aPercentages calculated after excluding women with unknown race/ethnicity
^bOther race includes non-Hispanic Asian and non-Hispanic Native Hawaiian/other Pacific Islander
^cNumber of years from the first HIV diagnosis code during cohort follow-up through cohort exit date. The distribution of cohort exit reasons was as follows: disenrolled from KPWA or no longer had a KPWA primary care provider (n = 144; 52.9%); end of study period (December 31, 2020) (n = 112; 41.2%); died (n = 10; 3.7%); moved out of the Puget Sound SEER registry catchment area or attained 90 years of age (n = 6; 2.2%)

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