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. Author manuscript; available in PMC: 2013 Jan 10.
Published in final edited form as: JAMA. 2012 Jul 25;308(4):339–342. doi: 10.1001/jama.2012.5927

Table 1.

Demographics of Study Sample by Calendar Year

No. (%) of Patients by Calendar Year
2001 (n = 5445) 2002 (n = 6433) 2003 (n = 8287) 2004 (n = 9537) 2005 (n = 10 137) 2006 (n = 11 030) 2007 (n = 12 194) 2008 (n = 13 719) 2009 (n = 14 684) 2010 (n = 15 944)
Age group, y
 18–29 729 (13.4) 869 (13.5) 1012 (12.7) 1212 (12.7) 1171 (11.6) 1269 (11.5) 1343 (11.0) 1536 (11.2) 1754 (11.9) 1977 (12.4)b

 30–39 2214 (40.7) 2436 (37.9) 2950 (35.6) 3164 (33.2) 3035 (29.9) 3009 (27.3) 3081 (25.3) 3263 (23.8) 3316 (22.6) 3434 (21.5)

 40–49 1782 (32.7) 2200 (34.2) 3032 (36.6) 3523 (36.9) 3930 (38.8) 4322 (39.2) 4857 (39.8) 5382 (39.2) 5624 (38.3) 5871 (36.8)

 ≥50 720 (13.2) 928 (14.4) 1292 (15.6) 1638 (17.2) 2001 (19.7) 2430 (22.0) 2913 (23.9) 3537 (25.8) 3990 (27.2) 4662 (29.2)

Sex
 Male 3776 (69.3) 4602 (71.6) 5879 (71.0) 6721 (70.5) 7167 (70.7) 7731 (70.1) 8562 (70.2) 9568 (69.7) 10 337 (70.4) 11 339 (71.1)

 Female 1669 (30.7) 1830 (28.4) 2407 (29.0) 2816 (29.5) 2970 (29.3) 3299 (29.9) 3632 (29.8) 4151 (30.3) 4347 (29.6) 4605 (28.9)

Race/ethnicity
 White 1379 (25.3) 1757 (27.3) 2294 (27.7) 2599 (27.3) 2672 (26.4) 2748 (24.9) 3005 (24.6) 3250 (23.7) 3449 (23.5) 3705 (23.2)b

 Black 2658 (48.8) 3163 (49.2) 4039 (48.7) 4637 (48.6) 4944 (48.8) 5535 (50.2) 6099 (50.0) 6977 (50.9) 7464 (50.8) 8164 (51.1)

 Hispanic 1295 (23.8) 1358 (21.1) 1786 (21.6) 2106 (22.1) 2258 (22.3) 2406 (21.8) 2726 (22.4) 3106 (22.6) 3336 (22.7) 3548 (22.3)

HIV risk factor
 MSM 1804 (33.1) 2397 (37.3) 3132 (37.8) 3570 (37.4) 3866 (38.1) 4207 (38.1) 4666 (38.3) 5145 (37.5) 5742 (39.1) 6377 (40.0)b

 HET 2072 (38.1) 2308 (35.8) 3140 (37.9) 3756 (39.4) 4056 (40.0) 4583 (41.6) 5033 (41.3) 5700 (41.6) 6110 (41.6) 6518 (40.9)

 IDU 1290 (23.7) 1349 (21.0) 1617 (19.5) 1737 (18.2) 1750 (17.3) 1832 (16.6) 1993 (16.4) 2208 (16.1) 2158 (14.7) 2175 (13.6)

Insurance
 Private 642 (11.8) 825 (12.8) 757 (9.1) 905 (9.5) 1317 (13.0) 1440 (13.1) 1835 (15.1) 2028 (14.8) 2105 (14.3) 2695 (17.3)b

 Medicaid 2353 (43.2) 2390 (37.2) 2824 (34.1) 2956 (31.0) 3849 (38.0) 3957 (35.9) 4330 (35.5) 5225 (38.1) 5396 (36.8) 5075 (32.5)

 Medicare 425 (7.8) 545 (8.5) 762 (9.2) 903 (9.5) 1118 (11.0) 1667 (15.1) 1812 (14.9) 2097 (15.3) 2287 (15.6) 2690 (17.3)

 Uninsured 1823 (33.5) 2181 (33.9) 2816 (34.0) 3073 (32.2) 3276 (32.3) 3577 (32.4) 3674 (30.1) 3836 (28.0) 4204 (28.6) 4711 (30.2)

CD4 T-cell count, /μL
 ≤200 1653 (30.4) 1711 (26.6) 2062 (24.9) 2271 (23.8) 2357 (23.3) 2382 (21.6) 2515 (20.6) 2767 (20.2) 2728 (18.6) 2674 (16.8)

 >200 3792 (69.6) 4722 (73.4) 6224 (75.1) 7266 (76.2) 7780 (76.8) 8648 (78.4) 9679 (79.4) 10 952 (79.8) 11 956 (81.4) 13 270 (83.2)

Receiving ART
 Recommendedc 1596 (77.6) 1752 (79.2) 2166 (77.2) 2280 (77.5) 2475 (80.9) 2498 (81.7) 4956 (80.9) 5905 (85.5) 6320 (89.9) 6313 (91.3)b

 All 3597 (66.1) 4340 (67.5) 5490 (66.3) 6254 (66.0) 6887 (69.2) 7769 (72.0) 8773 (74.9) 10 609 (79.3) 11 980 (83.7) 13 372 (86.3)b

HIV RNA ≤400 copies/mLd 1008 (44.7) 1432 (44.9) 1895 (45.8) 2543 (51.5) 3146 (55.2) 3831 (58.6) 4358 (60.5) 5591 (63.8) 6852 (68.6) 8061 (72.2)b

Abbreviations: ART, antiretroviral therapy; HET, heterosexual transmission; HIV, human immunodeficiency virus; IDU, injection drug use; MSM, men who have sex with men.

a

Median follow-up time of care for the cohort was 2 years (mean, 3.3 years). The number of patients receiving care was defined as attending 1 or more clinic visit and having 1 or more CD4 test recorded during the year.

b

For test of association between row variable and year (2001–2010), the P value was less than .05.

c

Among patients recommended to receive ART: CD4 T-cell count of 200/μL or less for 2001–2006; CD4 T-cell count of 350/μL or less for 2007–2010.

d

Among all patients receiving ART; median number of HIV RNA tests per patient per year was 2 for 2001 and 3 for 2002–2010.