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Table 2 Comparison of Individuals Providing Only Baseline Data and Individuals Providing Complete Data at Baseline and at Six Months' Follow-Up

From: Substance abuse treatment and psychiatric comorbidity: do benefits spill over? analysis of data from a prospective trial among cocaine-dependent homeless persons

Characteristic1

Baseline Only (n = 32)

Available at Baseline and 6 months (n = 95)

Statistical Test 2

p

Age

38.97 (7.96)

37.65 (7.10)

U = 1391.5

0.59

Race (% AA)

71.9

86.3

χ2 = 3.49

0.06

Gender (% male)

68.8

74.7

χ2 = 0.44

0.51

Education

12.93 (3.45)

13.03 (2.02)

U = 1465

0.76

Diagnostic Category at Baseline (%)

  

χ2 (df 3) = 0.08

0.99

ARD Only (%)

9.4

10.5

  

MRD Only (%)

28.1

26.3

  

Combo (%)

31.3

32.6

  

None (%)

31.3

30.5

  

Abstinent (%)3

100.0

98.9

χ2 = 0.34

0.56

Anti-social Personality Disorder (%)

28.1

31.6

χ2 = 0.13

0.71

  1. Table Notes
  2. 1. Abbreviations: ARD = anxiety-related disorder; MRD = mood-related disorder; Combo = presence of both ARD and MRD; AA = African American.
  3. 2. Continuous variables are compared with the Mann-Whitney U-Test, and categorical variables are compared with the χ2 test (df = 1 for all comparisons except where noted).
  4. 3. Abstinent (%) refers to abstinence at baseline, by urine test in the first few days after entering treatment