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Table 1 Demographic and hospital characteristics of inpatient drug-detoxification hospitalizations for patients aged≥12 years: 2003–2011 Nationwide Inpatient Samples

From: National trends and characteristics of inpatient detoxification for drug use disorders in the United States

Year Overall (2003–2011) 2003 2011 p value
Sample size, unweighted N 271,403 27,626 28,692
Weighted N 1,284,276 128,277 131,371
Weighted column, % % (95% CI) % (95% CI) % (95% CI)
Mean of age, years 38.79 38.29–39.29 37.24 35.91–38.57 39.94 38.17–41.71 0.017
Age group, years        < 0.001
 12–17 0.73 (0.45–1.18) 1.19 (0.57–2.48) 0.53 (0.17–1.63)  
 18–25 13.95 (12.82–15.17) 14.94 (11.16–19.72) 14.89 (11.65–18.83)  
 26–34 22.53 (21.54–23.54) 24.92 (22.90–27.05) 23.02 (19.46–27.01)  
 35–49 45.01 (43.45–46.58) 46.74 (42.32–51.20) 36.99 (33.03–41.13)  
 50–64 16.24 (15.21–17.32) 10.93 (9.21–12.92) 22.17 (18.38–26.50)  
 65+ 1.55 (1.36–1.76) 1.29 (0.83–1.99) 2.41 (1.71–3.37)  
Sex        0.286
 Male 65.27 (63.97–66.55) 63.02 (60.03–65.92) 64.82 (61.52–67.98)  
 Female 34.60 (33.34–35.89) 36.69 (33.85–39.62) 35.10 (31.96–38.38)  
Race/Ethnicity        0.001
 White, non-Hispanic 44.77 (41.18–48.41) 44.57 (34.68–54.90) 53.98 (42.42–65.13)  
 Black, non-Hispanic 20.74 (17.78–24.05) 14.58 (9.80–21.14) 27.19 (17.69–39.36)  
 Hispanic 9.63 (7.69–12.00) 8.13 (5.10–12.74) 7.60 (5.03–11.33)  
 Asian/Pacific-Islander/Native-American 0.67 (0.52–0.87) 0.34 (0.21–0.55) 0.99 (0.47–2.10)  
 Other races, non-Hispanic 3.85 (2.80–5.27) 4.30 (1.59–11.11) 3.87 (1.81–8.09)  
 Unknowna 16.78 (13.46-20.72) 23.28 (12.83–38.47) 4.40 (1.72–10.77)  
Household income        0.731
 Lowest quartile 36.41 (33.55–39.36) 33.25 (25.96–41.43) 33.51 (26.23–41.67)  
 2nd quartile 20.75 (19.46–22.11) 24.98 (21.17–29.23) 21.09 (17.64–25.00)  
 3rd quartile 18.72 (17.28–20.26) 20.27 (16.26–24.96) 20.60 (17.47–24.13)  
 Highest quartile 17.66 (15.96–19.49) 17.14 (13.29–21.82) 19.39 (15.16–24.47)  
Primary expected payer        0.219
 Medicare 11.89 (11.10–12.74) 11.19 (8.45–14.67) 14.02 (10.85–17.92)  
 Medicaid 39.89 (36.03–43.87) 28.68 (19.99–39.28) 40.37 (30.77–50.76)  
 Private 22.72 (20.44–25.18) 28.86 (21.43–37.64) 21.74 (15.95–28.91)  
 Self-pay 18.53 (15.78–21.62) 19.65 (11.64–31.22) 17.66 (10.19–28.85)  
 Other payers 6.76 (5.48–8.32) 11.52 (6.34–20.02) 6.04 (3.48–10.30)  
Hospital region        0.793
 Northeast 44.02 (38.66–49.51) 41.70 (26.61–58.53) 36.80 (23.99–51.78)  
 Midwest 20.44 (16.44–25.12) 20.71 (11.21–35.08) 18.15 (8.62–34.25)  
 South 25.02 (21.12–29.38) 22.87 (14.38–34.35) 31.51 (20.13–45.64)  
 West 10.52 (8.60–12.81) 14.72 (8.65–23.92) 13.54 (7.25–23.90)  
Hospital location        0.126
 Rural 6.99 (5.36–9.07) 10.81 (4.90–22.17) 5.05 (2.70–9.27)  
 Urban 92.88 (90.80–94.52) 89.19 (77.83–95.10) 94.83 (90.61–97.22)  
Detoxification procedure array        0.817
 Primary procedure 96.48 (95.74–97.10) 96.57 (94.85–97.73) 96.83 (94.65–98.14)  
 Secondary procedure 3.52 (2.90–4.26) 3.43 (2.27–5.15) 3.17 (1.86–5.35)  
Detoxification and treatment        0.157
 Drug detoxification-only 87.45 (84.58–89.85) 79.82 (68.08–88.01) 88.47 (79.32–93.88)  
 Drug detoxification plus rehabilitation 12.55 (10.15–15.42) 20.18 (11.99–31.92) 11.53 (6.12–20.68)  
Discharge statusb        0.007
 Routine discharge 76.65 (75.23–78.00) 79.06 (76.04–81.80) 75.01 (69.62–79.72)  
 Transfer to further treatment 9.44 (8.41–10.57) 6.79 (4.92–9.30) 12.57 (8.91–17.44)  
 Discharges against medical advice (DAMA) 13.67 (12.69–14.72) 13.62 (11.29–16.33) 12.30 (10.00–15.05)  
  1. CI confidence interval
  2. We reduced the significant level to 0.01 due to a relatively large sample. Boldface: p < 0.01
  3. aRace/ethnicity information were not available in some states in some years, which were coded into unknown category
  4. bThe categories of died and other discharges were not reported due to small sample size (less than 10)