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. Author manuscript; available in PMC: 2019 Apr 19.
Published in final edited form as: Drug Alcohol Depend. 2018 Feb 21;185:305–312. doi: 10.1016/j.drugalcdep.2017.12.030
Overall Stimulant-only
deaths
Opioid-plus -
stimulant deaths††
Opioid-only
deaths†††
Bivariable results
N (%) or M (SD) N (%)δ or M (SD) N (%)δ or M (SD) N (%)δ or M (SD) Test statistic P-value





Total 2001 (100.00) 749 (37.43) 624 (31.18) 628 (31.38)
Demographic characteristics*
 Age 48.84 (12.06) 50.22 (11.14) 47.43 (11.31) 48.60 (13.57) F = 9.43 p < 0.01
 Sex χ2 = 22.27 p < 0.01
  Male 1470 (73.46) 590 (78.77) 456 (73.08) 424 (67.52)
  Female 531 (26.54) 159 (21.23) 168 (26.92) 204 (32.48)
 Race/ethnicity χ2 = 139.82 p < 0.01
  White 1089 (54.42) 306 (40.85) 358 (57.37) 425 (67.68)
  Black/African American 552 (27.59) 281 (37.52) 182 (29.17) 89 (14.17)
  Hispanic/Latino(a) 216 (10.79) 89 (11.88) 54 (8.65) 73 (11.62)
  Asian/Pacific Islander 80 (4.00) 49 (6.54) 11 (1.76) 20 (3.18)
  Other/Mixed 64 (3.20) 24 (3.20) 19 (3.04) 21 (3.34)
 Death Year χ2 = 82.11 p < 0.01
  2005 - 2007 517 (25.84) 223 (29.77) 202 (32.37) 92 (14.65)
  2008 - 2010 522 (26.09) 153 (20.43) 158 (25.32) 211 (33.60)
  2011 - 2013 568 (28.39) 203 (27.10) 156 (25.00) 209 (33.28)
  2014 - 2015 394 (19.69) 170 (22.70) 108 (17.31) 116 (18.47)
Death also due to alcohol†††* χ2 = 38.06 p < 0.01
 No 1679 (83.91) 669 (89.32) 526 (84.29) 484 (77.07)
 Yes 322 (16.09) 80 (10.68) 98 (15.71) 144 (22.93)
Cause of death
 Cardiac* 83 (4.15) 59 (7.88) 9 (1.44) 15 (2.39) χ2 = 42.58 p < 0.01
  Electrical conduction 16 (0.80) 11 (1.47) 1 (0.16) 4 (0.64)
  Aortic 9 (0.45) 8 (1.07) 1 (0.16) 0 0.00
  Pericardial 3 (0.15) 3 (0.40) 0 0.00 0 0.00
  Hypertension 21 (1.05) 11 (1.47) 3 (0.48) 7 (1.11)
  Atherosclerotic disease ormyocardial infarction 28 (1.40) 22 (21.23) 2 (0.32) 4 (0.64)
  Congestive heart failure or cardiomyopathy 16 (0.80) 11 (21.23) 2 (0.32) 3 (0.48)
 Cerebral hemorrhage* 102 (5.10) 98 (13.08) 1 (0.16) 3 (0.48) Fisher's exact p < 0.01
 Neurologic or psychiatric 5 (0.25) 3 (0.40) 0 0.00 2 (0.32)
  Chronic neurologic 1 (0.05) 0 0.00 0 0.00 1 (0.16)
  Other neurologic 1 (0.05) 0 0.00 0 0.00 1 (0.16)
  Seizure 1 (0.05) 1 (0.13) 0 0.00 0 0.00
  Psychiatric 1 (0.05) 1 (0.13) 0 0.00 0 0.00
  Herniation 1 (0.05) 1 (0.13) 0 0.00 0 0.00
 Infection 23 (1.15) 9 (1.20) 5 (0.80) 9 (1.43)
  Pneumonia 12 (0.60) 4 (0.53) 3 (0.48) 5 (0.80)
  Endocarditis 4 (0.20) 2 (0.27) 2 (0.32) 0 0.00
  Infection NOS 9 (0.45) 4 (0.53) 0 0.00 5 (0.80)
 Trauma 12 (0.60) 5 (0.67) 5 (0.80) 2 (0.32)
 Malignancy 7 (0.35) 2 (0.27) 2 (0.32) 3 (0.48)
 Overdose Complication 32 (1.60) 13 (1.74) 7 (1.12) 12 (1.91)
  Aspiration 7 (0.35) 2 (0.27) 2 (0.32) 3 (0.48)
  Anoxia 28 (1.40) 12 (1.60) 5 (0.80) 11 (1.75)
 Other 42 (2.10) 18 (2.40) 8 (1.28) 16 (2.55)
  Rheumatologic 0 0.00 0 0.00 0 0.00 0 0.00
  Metabolic/endocrine 1 (0.05) 1 (0.13) 0 0.00 0 0.00
  Liver disease 11 (0.55) 1 (0.13) 2 (0.32) 8 (1.27)
  Renal disease 3 (0.15) 2 (0.27) 0 0.00 1 (0.16)
  Chronic pulmonary disease 5 (0.25) 3 (0.40) 0 0.00 2 (0.32)
  Sleep Apnea 0 0.00 0 0.00 0 0.00 0 0.00
  Multi-organ failure 10 (0.50) 5 (0.67) 3 (0.48) 2 (0.32)
  Other hemorrhage 4 (0.20) 3 (0.40) 0 0.00 1 (0.16)
  Bowel ischemia 4 (0.20) 2 (0.27) 1 (0.16) 1 (0.16)
  Thromboembolic 4 (0.20) 1 (0.13) 2 (0.32) 1 (0.16)
Significant contributing condition
 Cardiac* 581 (29.04) 252 (33.64) 136 (21.79) 193 (30.73) χ2 = 24.48 p < 0.01
  Electrical conduction 5 (0.25) 2 (0.27) 1 (0.16) 2 (0.32)
  Aortic 6 (0.30) 3 (0.40) 1 (0.16) 2 (0.32)
  Pericardial 5 (0.25) 4 (0.53) 0 0.00 1 (0.16)
  Hypertension 333 (16.64) 148 (19.76) 73 (11.70) 112 (17.83)
  Atherosclerotic disease or myocardial infarction 246 (12.29) 118 (19.76) 58 (9.29) 70 (11.15)
  Congestive heart failure or cardiomyopathy 165 (8.25) 69 (19.76) 42 (6.73) 54 (8.60)
 Cerebral hemorrhage 6 (0.30) 2 (0.27) 0 0.00 4 (0.64)
 Neurologic or psychiatric 30 (1.50) 10 (1.34) 6 (0.96) 14 (2.23)
  Chronic neurologic 14 (0.70) 2 (0.27) 4 (0.64) 8 (1.27)
  Other neurologic 1 (0.05) 0 0.00 1 (0.16) 0 0.00
  Seizure 13 (0.65) 6 (0.80) 1 (0.16) 6 (0.96)
  Psychiatric 2 (0.10) 2 (0.27) 0 0.00 0 0.00
  Herniation 1 (0.05) 1 (0.13) 0 0.00 0 0.00
 Infection 83 (4.15) 24 (3.20) 22 (3.53) 37 (5.89)
  Pneumonia 54 (2.70) 13 (1.74) 14 (2.24) 27 (4.30)
  Endocarditis 3 (0.15) 2 (0.27) 1 (0.16) 0 0.00
  Infection NOS 30 (1.50) 12 (1.60) 7 (1.12) 11 (1.75)
 Trauma 12 (0.60) 5 (0.67) 5 (0.80) 2 (0.32)
 Malignancy 26 (1.30) 10 (1.34) 7 (1.12) 9 (1.43)
 Overdose complication 1 (0.05) 0 0.00 1 (0.16) 0 0.00
  Aspiration 0 0.00 0 0.00 0 0.00 0 0.00
  Anoxia 1 (0.05) 0 0.00 1 (0.16) 0 0.00
 Other 397 (19.84) 151 (20.16) 111 (17.79) 135 (21.50)
  Rheumatologic 2 (0.10) 0 0.00 0 0.00 2 (0.32)
  Metabolic/endocrine 140 (7.00) 48 (6.41) 40 (6.41) 52 (8.28)
  Liver disease 118 (5.90) 41 (5.47) 31 (4.97) 46 (7.32)
  Renal disease 54 (2.70) 20 (2.67) 15 (2.40) 19 (3.03)
  Chronic pulmonary disease 133 (6.65) 57 (7.61) 33 (5.29) 43 (6.85)
  Sleep Apnea 7 (0.35) 2 (0.27) 1 (0.16) 4 (0.64)
  Multi-organ failure 0 0.00 0 0.00 0 0.00 0 0.00
  Other hemorrhage 8 (0.40) 4 (0.53) 2 (0.32) 2 (0.32)
  Bowel ischemia 1 (0.05) 1 (0.13) 0 0.00 0 0.00
  Thromboembolic 2 (0.10) 1 (0.13) 0 0.00 1 (0.16)
Chronic infections
 HIV 87 (4.35) 41 (5.47) 29 (4.65) 17 (2.71)
 HCV 135 (6.75) 44 (5.87) 50 (8.01) 41 (6.53)

Causes of death and significant contributing conditions are not mutually exclusive. Except for 6/2001 (0.30%) cases with unknown race/ethnicity (coded into "Other/Mixed" race/ethnicity), no data were missing.

Includes decedents with cause of death listed as acute toxicity from methamphetamine, amphetamine, or cocaine; excludes decedents with cause of death listed as acute toxicity from opioids.

††

Includes decedents with cause of death listed as acute toxicity from stimulants (methamphetamine, amphetamine, or cocaine) and opioids (heroin, buprenorphine, codeine, fentanyl, hydrocodone, hydromorphone, meperidine, methadone, morphine, oxycodone, oxymorphone, propoxyphene, and other opioids).

†††

Includes decedents with cause of death listed as acute toxicity from heroin, buprenorphine, codeine, fentanyl, hydrocodone, hydromorphone, meperidine, methadone, morphine, oxycodone, oxymorphone, propoxyphene, and other opioids; excludes decedents with cause of death listed as acute toxicity from stimulants.

Percentages calculated out of a total of 2001 opioid or stimulant deaths from 2005-2015.

δ

Percentages calculated out of the total deaths for that substance group (749 for stimulant-only deaths; 624 for opioid-plus-stimulant deaths; 628 for opioid-only deaths).

*

Included in bivariable analyses comparing stimulant-only, opioid-plus-stimulant, or opioid-only deaths.

Includes American Indian/Alaska Native (n = 15), Other/Mixed (n = 43), and Unknown (n = 6) race/ethnicities.

†††

Includes decedents with cause of death listed as acute toxicity from alcohol.