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. 2021 Aug 19;22(5):1076–1085. doi: 10.5811/westjem.2021.3.50839

Table 3.

Association between alcohol/substance use disorder status in emergency department patients and their visit characteristics (*NHAMCS 2016–2017).

SUD (AUD or DUD) AUD only DUD only



Crude OR (95% CI) Adjusted OR (95% CI) Crude OR (95% CI) Adjusted OR (95% CI) Crude OR (95% CI) Adjusted OR (95% CI)
Age
 18–25 Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 26–39 1.23(1.09–1.38) 1.16(1.02–1.31) 1.50(1.20–1.88) 1.42(1.12–1.80) 1.17(1.03–1.33) 1.10(0.97–1.25)
 40–49 1.36(1.19–1.55) 1.28(1.12–1.47) 2.22(1.76–2.80) 2.17(1.70–2.78) 1.20(1.05–1.38) 1.12(0.96–1.29)
 50–59 1.53(1.34–1.73) 1.34(1.16–1.53) 3.55(2.85–4.42) 3.22(2.55–4.08) 1.24(1.08–1.42) 1.08(0.93–1.25)
 60–74 0.78(0.68–0.90) 0.73(0.62–0.85) 1.79(1.41–2.27) 1.76(1.35–2.28) 0.62(0.53–0.73) 0.59(0.50–0.71)
 ≥ 75 0.19(0.15–0.25) 0.17(0.13–0.22) 0.27(0.17–0.43) 0.24(0.15–0.38) 0.16(0.12–0.22) 0.15(0.11–0.21)
Male vs female 2.00(1.86–2.15) 1.79(1.66–1.94) 3.00(2.65–3.38) 2.35(2.06–2.68) 1.82(1.67–1.97) 1.65(1.51–1.80)
Race/ethnicity
 NH White Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 White 0.73(0.61–0.88) 0.64(0.53–0.78) 0.92(0.70–1.20) 0.81(0.61–1.08) 0.66(0.54–0.82) 0.59(0.48–0.74)
 NH Black 0.99(0.89–1.10) 0.76(0.68–0.85) 1.14(0.98–1.34) 1.02(0.86–1.20) 0.97(0.87–1.09) 0.72(0.64–0.81)
 Black 1.40(0.74–2.68) 0.98(0.48–1.96) 1.36(0.49–3.74) 0.96(0.32–2.89) 1.39(0.69–2.80) 0.94(0.44–1.97)
 Hispanic 0.83(0.68–1.02) 0.64(0.52–0.80) 1.32(1.01–1.73) 0.96(0.71–1.29) 0.75(0.59–0.95) 0.60(0.47–0.77)
 Asian 0.48(0.34–0.69) 0.50(0.34–0.73) 0.63(0.38–1.06) 0.52(0.30–0.91) 0.49(0.33–0.72) 0.55(0.37–0.82)
 Other 1.40(1.03–1.90) 1.21(0.88–1.68) 1.47(0.93–2.33) 1.23(0.74–2.02) 1.51(1.10–2.08) 1.35(0.97–1.89)
Day of week
 Weekdays Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Weekends 1.08 (0.99–1.17) 1.10(1.01–1.20) 1.15(1.02–1.31) 1.19(1.04–1.37) 1.07(0.98–1.17) 1.10(1.00–1.20)
Residence type
 Private residence Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Nursing home 0.31(0.20–0.50) 0.32(0.20–0.52) 0.58(0.33–1.03) 0.42(0.23–0.77) 0.20(0.11–0.38) 0.24(0.13–0.46)
 Homeless 9.00(7.50–10.80) 4.05(3.30–4.96) 9.50(7.72–11.68) 2.76(2.17–3.53) 7.66(6.37–9.22) 3.78(3.07–4.64)
 Other 1.90(1.49–2.43) 1.16(0.89–1.51) 2.16(1.53–3.06) 0.94(0.64–1.37) 1.82(1.39–2.37) 1.22(0.92–1.62)
Insurance type
 Private insurance Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Medicare 0.87(0.77–0.99) 1.40(1.24–1.58) 1.04(0.86–1.26) 1.38(1.14–1.66) 0.79(0.68–0.90) 1.32(1.16–1.51)
 Medicaid or CHIP 2.24(2.02–2.47) 2.11(1.90–2.35) 2.24(1.91–2.63) 1.89(1.59–2.25) 2.24(2.01–2.50) 2.11(1.88–2.37)
 Uninsured 1.66(1.44–1.91) 1.48(1.28–1.73) 1.66(1.32–2.08) 1.50(1.18–1.92) 1.70(1.46–1.98) 1.50(1.28–1.76)
 Other 1.42(1.14–1.77) 1.09(0.87–1.38) 1.50(1.06–2.11) 0.95(0.66–1.37) 1.39(1.09–1.77) 1.13(0.88–1.45)
Temperature
 36°C–38°C Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 ≤ 36°C 1.37(1.11–1.68) 1.24(0.99–1.55) 1.95(1.49–2.56) 1.67(1.24–2.25) 1.30(1.04–1.63) 1.21(0.95–1.54)
 > 38°C 0.53(0.35–0.80) 0.50(0.32–0.77) 0.48(0.24–0.98) 0.46(0.22–0.96) 0.49(0.30–0.79) 0.48(0.30–0.79)
Heart rate
 ≤ 90 Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 90–100 1.42(1.29–1.57) 1.29(1.16–1.43) 1.53(1.32–1.77) 1.51(1.28–1.77) 1.39(1.25–1.55) 1.23(1.10–1.37)
 100–110 1.54(1.37–1.74) 1.39(1.22–1.58) 1.70(1.42–2.03) 1.76(1.44–2.14) 1.47(1.29–1.67) 1.27(1.11–1.46)
 110–120 1.76(1.51–2.06) 1.56(1.32–1.85) 2.14(1.71–2.68) 2.19(1.71–2.81) 1.57(1.32–1.88) 1.32(1.10–1.60)
 > 120 2.17(1.82–2.58) 1.94(1.60–2.35) 2.68(2.10–3.41) 2.65(2.02–3.48) 1.88(1.55–2.29) 1.61(1.30–1.98)
DBP
 60–80 Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 < 60 1.01(0.88–1.15) 1.06(0.92–1.23) 1.06(0.86–1.30) 1.08(0.86–1.35) 1.01(0.87–1.17) 1.08(0.93–1.26)
 > 80 1.25(1.16–1.35) 1.06(0.97–1.15) 1.30(1.15–1.46) 1.04(0.91–1.19) 1.23(1.13–1.34) 1.06(0.97–1.16)
Pain level
 No pain Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Mild 0.57(0.47–0.68) 0.72(0.59–0.87) 0.43(0.33–0.58) 0.63(0.47–0.85) 0.57(0.47–0.70) 0.71(0.57–0.89)
 Moderate 0.66(0.59–0.75) 0.91(0.82–1.02) 0.42(0.35–0.50) 0.73(0.63–0.85) 0.72(0.63–0.82) 0.97(0.86–1.09)
 Severe 0.80(0.72–0.89) 0.87(0.77–0.99) 0.47(0.39–0.56) 0.61(0.50–0.74) 0.89(0.79–1.00) 0.96(0.84–1.10)
72-hour revisit vs not 0.61(0.51–0.72) 1.32(1.09–1.61) 0.51(0.40–0.66) 1.46(1.10–1.93) 0.66(0.54–0.80) 1.21(0.98–1.50)
Arrival by ambulance versus not 2.30(2.12–2.49) 2.29(2.09–2.52) 4.41(3.92–4.95) 3.36(2.95–3.83) 1.87(1.71–2.05) 1.90(1.71–2.11)
Census Region
 Northeast Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Midwest 1.27(1.14–1.43) 1.53(1.35–1.73) 0.62(0.52–0.74) 0.76(0.63–0.92) 1.45(1.28–1.65) 1.71(1.49–1.96)
 South 0.91(0.81–1.02) 1.07(0.95–1.21) 0.59(0.50–0.69) 0.70(0.58–0.84) 1.00(0.88–1.13) 1.16(1.02–1.33)
 West 1.13(1.00–1.27) 1.06(0.93–1.21) 1.04(0.89–1.22) 1.05(0.88–1.26) 1.12(0.98–1.27) 1.01(0.88–1.17)
Reason for visit (by symptom module)
 General Reference [1] Reference [1] Reference [1] Reference [1] Reference [1] Reference [1]
 Psychiatric 4.36(3.77–5.04) 3.08(2.62–3.62) 5.45(4.48–6.62) 3.26(2.62–4.04) 3.83(3.28–4.47) 2.73(2.31–3.24)
 Neurologic 0.81(0.68–0.96) 0.79(0.66–0.94) 0.85(0.65–1.11) 0.86(0.66–1.14) 0.80(0.67–0.96) 0.78(0.65–0.94)
 Cardiovascular and lymphatic 0.78(0.59–1.04) 0.89(0.66–1.21) 0.83(0.53–1.30) 0.88(0.55–1.40) 0.77(0.57–1.06) 0.93(0.67–1.28)
 Eyes and/or ears 0.40(0.27–0.58) 0.45(0.30–0.66) 0.15(0.06–0.42) 0.22(0.08–0.61) 0.42(0.28–0.63) 0.44(0.29–0.66)
 Respiratory 0.68(0.58–0.80) 0.73(0.62–0.86) 0.43(0.32–0.58) 0.47(0.34–0.64) 0.72(0.60–0.85) 0.76(0.64–0.91)
 Digestive 0.88(0.78–1.00) 0.97(0.85–1.11) 0.67(0.54–0.84) 0.96(0.76–1.20) 0.86(0.75–0.99) 0.89(0.77–1.03)
 Genitourinary 0.40(0.32–0.52) 0.49(0.38–0.63) 0.23(0.14–0.39) 0.41(0.25–0.70) 0.42(0.32–0.54) 0.46(0.35–0.60)
 Dermatologic 0.83(0.65–1.06) 0.81(0.63–1.04) 0.41(0.25–0.70) 0.49(0.29–0.83) 0.90(0.70–1.17) 0.84(0.65–1.10)
 Musculoskeletal 0.73(0.64–0.84) 0.71(0.61–0.82) 0.52(0.41–0.66) 0.52(0.40–0.68) 0.75(0.65–0.87) 0.72(0.62–0.84)
 Other 1.34(1.20–1.51) 1.05(0.91–1.22) 2.02(1.71–2.39) 1.32(1.07–1.63) 1.15(1.02–1.31) 0.97(0.83–1.13)
 Visit related to injury versus not 0.75(0.70–0.81) 1.19(1.07–1.33) 0.52(0.46–0.58) 1.60(1.36–1.89) 0.84(0.78–0.92) 1.08(0.96–1.21)
*

NHAMCS, National Hospital Ambulatory Medical Care Survey.

Note: The adjusted odds ratio (OR) was from a logistic regression including all variables in the table.

DUD, drug use disorder; SUD, substance use disorder; AUD, alcohol use disorder; CI, confidence interval; OR, odds ratio NH, non-Hispanic; H, Hispanic; CHIP, Children’s Health Insurance Program; C, celsius.

Note: The adjusted odds ratio (OR) was from a logistic regression including all variables in the table.

DUD, drug use disorder; SUD, substance use disorder; AUD, alcohol use disorder; CI, confidence interval; OR, odds ratio; DBP, diastolic blood pressure; SBP, systolic blood pressure.