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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: J Psychiatr Res. 2011 Jul 13;45(11):1453–1462. doi: 10.1016/j.jpsychires.2011.06.012

Table 1.

Characteristics of psychiatric patients aged 2–17 years in a large electronic health records database, by SUD status: 2000–2010 (N=11,457)

Selected characteristics,
N (%)
Total Patients with
a SUD
diagnosis
Patients
without
a SUD
diagnosis
χ2 (df) P-value

Sample size N=11,457 N=1,423 N=10,034
Age at first treatment visit
  2–12 years 6210 (54.2) 104 (7.3) 6106 (60.9) 1439.4 (1) <0.001
  13–17 years 5247 (45.8) 1319 (92.7) 3928 (39.2)

Sex
  Male 6643 (58.0) 982 (69.0) 5661 (56.4) 81.1 (1) <0.001
  Female 4814 (42.0) 441 (31.0) 4373 (43.6)

Race/ethnicity
  White, non-Hispanic 5649 (49.3) 716 (50.3) 4933 (49.2) 8.0 (3) 0.045
  Black, non-Hispanic 4042 (35.3) 488 (34.3) 3554 (35.4)
  Other 568 (5.0) 53 (3.7) 515 (5.1)
  Missing data on race/ethnicity 1198 (10.5) 166 (11.7) 1032 (10.3)

Treatment setting
  Inpatient 2768 (24.2) 617 (43.4) 2151 (21.4) 326.9(1) <0.001
  Outpatient only 8689 (75.8) 806 (56.6) 7883 (78.6)

Df: degree of freedom; SUD: substance use disorder.