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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Ann Epidemiol. 2016 Aug 8;26(9):619–630.e2. doi: 10.1016/j.annepidem.2016.07.012

Table 2.

Distribution of place and participant characteristics among people who inject drugs from 19 US metro areas in 2009, stratified by race/ethnicity5,6

Injection related-risk behavior sample
Latino
N (%)or Mean (SD)
N= 1,593
Black
N (%)or Mean (SD)
N=4,537
White
N (%)or Mean (SD)
N=2,656

Region7
 Northeast 574 (36.03) 716 (15.78) 786 (29.59)
 South 317 (19.90) 2,559 (56.40) 638 (24.02)
 Midwest 169 (10.61) 598 (13.18) 150 (5.65)
 West 533 (33.46) 664 (14.64) 1,082 (40.74)
Metropolitan statistical area
Black isolation 0.45 (0.19) 0.51 (0.18) 0.40 (0.20)
Latino isolation 0.48 (0.16) 0.36 (0.17) 0.36 (0.17)
County
Percent unaffordable rental units among low income residents 84.94 (7.29) 85.55 (6.53) 84.65 (7.17)
Average number of months on waiting lists for assisted housing 35.29 (18.69) 28.23 (15.99) 30.03 (18.96)
Drug arrest rates per 1000 residents 10.97 (5.21) 11.36 (10.58) 9.34 (7.54)
ZIP code
Density per square mile of off-premise alcohol outlets 19.57 (26.94) 8,50 (10.87) 17.14 (26.97)
Density per square mile of abandoned residential units 91.84 (105.80) 176.07 (206.32) 83.38 (106.48)
Percent of housing units with >1.5 people per room 3.76 (3.79) 1.95 (2.52) 2.59 (3.00)
Percent non-Hispanic black residents 22.75 (21.73) 56.76 (29.91) 20.53 (21.72)
Economic deprivation 2.57 (2.34) 2.80 (2.03) 1.23 (2.15)
Gentrification 0.48 (1.67) 0.33 (1.75) 0.62 (1.56)
Spatial access to drug treatment 2.64 (3.09) 1.58 (1.95) 2.50 (2.76)
Spatial access to syringe exchange programs 0.15 (0.24) 0.16 (0.35) 0.18 (0.32)
Participant characteristics
Mean current age (SD) 41.80 (9.89) 50.22 (8.21) 40.34 (11.10)
Male sex 1,222 (76.71) 3,269 (72.05) 1,815 (68.34)
Men who ever had sex with men 260 (21.28) 494 (15.11) 481 (26.50)
Currently married or living as married 279 (17.51) 603 (13.29) 275 (10.35)
Annual income (≤ 5,000 USD vs. > 5,000 USD) 592 (37.16) 1,609 (35.46) 1,237 (46.57)
Currently employed full-time 56 (3.52) 181 (3.99) 146 (5.50)
Incarceration 618 (38.79) 1,454 (32.05) 1,143 (43.03)
Homelessness 1,000 (62.77) 2,479 (54.64) 1,796 (67.62)
Daily injection drug use 301 (18.90) 1,107 (24.40) 840 (31.63)
Injection-related risk behavior 1,019 (63.97) 2,668 (58.81) 1,812 (68.22)
Binge drinking 859 (53.92) 2,530 (55.76) 1,451 (54.63)
Non-injection drug use 1,121 (70.37) 3,256 (71.77) 2,239 (84.30)
Receipt of free clean syringes 716 (44.95) 1,776 (39.14) 1,253 (47.14)
Ever received alcohol or drug treatment 1,168 (73.32) 3,411 (75.18) 2,171 (81.74)
Condomless sex 1,108 (69.60) 3,106 (68.50) 1,903 (71.70)
Exchanged sex for drugs or money 322 (20.21) 1,205 (26.56) 556 (20.93)
Receipt of free condoms 763 (47.90) 2,366 (52.16) 1,299 (48.91)
Negative result on most recent HIV test 1,232 (77.34) 3,497 (77.08) 2,088 (78.61)
Positive result on most recent HIV test 70 (4.39) 301 (6.63) 111 (4.18)

Note: estimates for men who had sex with men, drug treatment, condomless sex, and receipt of free condoms do not add up to 100% due to missing observations

5

Refer to table 1 for definitions of place characteristics measured at MSA, county, and ZIP code levels and participant characteristics

6

“Plurality” guidelines from the Federal Office of Management and Budget were used to group Non-Hispanic biracial participants to the white and black racial categories. See the following citation for additional information: OMB. Provisional guidance on the implementation of the 1997 standards for federal data on race and ethnicity, Executive Office of the President, December 15. : U.S. Office of Management and Budget; 2000.

7

The Northeast region includes the MSAs of Boston, Massachusetts; Nassau-Suffolk, New York; New York, New York; Newark, New Jersey; and Philadelphia, Pennsylvania. South region includes Atlanta, Georgia; Baltimore, Maryland; Dallas, Texas; Houston, Texas; Miami, Florida; New Orleans, Louisiana; and District of Columbia. Midwest region includes Chicago, Illinois and Detroit, Michigan. West region includes Denver, Colorado; Los Angeles, California; San Diego, California; San Francisco, California; and Seattle, Washington.