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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Drug Alcohol Depend. 2011 Jul 28;120(1-3):99–104. doi: 10.1016/j.drugalcdep.2011.07.002

TABLE 3.

Influence of Age of NUPM Onset on MDD Outcome Variables (N = 35,155)

Lifetime MDD Past Year MDD
Sample Size 9,032 5,533
      % (95%CI) 25.03 (25.26–25.18) 14.16 (13.56–14.77)
Overall Equation χ2 = 3820.74, p < .0001 χ2 = 6255.32, p < .0001
Age Group χ2 = 27.82, p = .002 χ2 = 14.08, p = .002
Ethnicity χ2 = 22.95, p = .082 χ2 = 6.70, p = .082
Gender χ2 = 255.56, p < .0001 χ2 = 150.25, p < .0001
Marital Status χ2 = 121.44, p < .0001 χ2 = 106.60, p < .0001
Education χ2 = 9.51, p = .009 χ2 = 18.74, p = .0001
Urbanicity χ2 = 5.66, p = .059 χ2 = 8.38, p = .015
NUPM Onset Age χ2 = 1.78, p = .182 χ2 = .068, p = .794
      OR, 95% CI 1.00 (0.990–1.01) 1.00 (0.990–1.01)

Notes: χ2 is the Wald χ2 for the variable; AOR = Odds Ratio; 95% CI = the 95% confidence interval

Listed Ns are unweighted; percentages endorsing MDD indicators are weighted