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Table 2 Adjusted a odds of enrollment status in the Millennium Cohort Study by panel (2004-2008)

From: The impact of deployment experience and prior healthcare utilization on enrollment in a large military cohort study

  Panel 2 (2004-2006) Panel 3 (2007-2008)
N = 141,366b N = 190,379c
Characteristicd OR (95% CI) OR 95% CI
Deployment experiencee     
  None 1.00 Ref 1.00 Ref
  Prior to enrollment only 1.11* 1.06, 1.16 1.02 0.99, 1.06
  During enrollment only 1.18* 1.14, 1.22 1.05* 1.02, 1.08
  Prior to and during enrollment 1.08* 1.03, 1.13 1.05* 1.02, 1.09
Sex     
Male 1.00 Ref 1.00 Ref
Female 1.91* 1.85, 1.97 1.77* 1.73, 1.82
Age (years)     
  17-20 1.00 Ref 1.00 Ref
  21-22 0.98 0.95, 1.02 1.04* 1.01, 1.08
  23-24 1.19* 1.14, 1.24 1.10* 1.05, 1.14
  >24 1.36* 1.31, 1.42 1.44* 1.38, 1.50
Education     
  Some college or less 1.00 Ref 1.00 Ref
  Bachelors or higher 1.49* 1.39, 1.60 1.47* 1.38, 1.58
Marital status     
  Never married 1.00 Ref 1.00 Ref
  Married 1.16* 1.12, 1.20 1.21* 1.18, 1.24
  Divorced, separated, or widowed 1.06 0.96, 1.17 1.10* 1.02, 1.20
Race/ethnicity     
  White, non-Hispanic 1.00 Ref 1.00 Ref
  Black, non-Hispanic 0.52* 0.50, 0.54 0.64* 0.62, 0.66
  Asian/Pacific Islander 0.98 0.92, 1.04 0.99 0.94, 1.05
  Hispanic 0.79* 0.76, 0.82 0.81* 0.77, 0.84
  Other 1.20* 1.08, 1.33 0.95 0.88, 1.01
Military pay grade     
  Enlisted 1.00 Ref 1.00 Ref
  Officer 1.48* 1.36, 1.61 1.35* 1.25, 1.45
Service component     
  Reserve/Guard 1.00 Ref 1.00 Ref
  Active-Duty 1.29* 1.25, 1.33 1.27* 1.24, 1.31
Branch of service     
  Army 1.00 Ref 1.00 Ref
  Navy/Coast Guard 0.74* 0.71, 0.77 1.06* 1.02, 1.10
  Marine Corps 0.38* 0.36, 0.39 0.80* 0.77, 0.83
  Air Force 1.01 0.98, 1.05 2.30* 2.23, 2.37
Military occupation     
  Combat specialist 1.00 Ref 1.00 Ref
  Electronic equipment repairer 1.73* 1.64, 1.83 1.80* 1.72, 1.89
  Communications/intelligence 1.57* 1.49, 1.66 1.58* 1.51, 1.66
  Healthcare 1.90* 1.80, 2.00 1.72* 1.63, 1.80
  Other technical and allied 1.67* 1.54, 1.82 1.87* 1.75, 1.99
  Functional support/administration 1.71* 1.63, 1.79 1.83* 1.75, 2.00
  Electrical/mechanical equipment repairer 1.28* 1.22, 1.34 1.44* 1.39, 1.50
  Craft worker 1.32* 1.22, 1.43 1.36* 1.27, 1.45
  Service and supply 1.25* 1.19, 1.31 1.25* 1.19, 1.31
  Students, trainees, other 1.36* 1.27, 1.46 1.69* 1.58, 1.80
  1. OR, odds ratio; CI, confidence interval; Ref, reference category.
  2. *Indicates significance at the P < 0.05 level.
  3. aModels were adjusted for all variables included in the table.
  4. bThere were 8,137 service members excluded due to missing or unknown demographic information.
  5. cThere were 9,292 service members excluded due to missing or unknown demographic information.
  6. dCharacteristics were evaluated at the time each sample was drawn (October 2003 for Panel 2; October 2006 for Panel 3).
  7. eAny deployment experience in support of the operations in Iraq and Afghanistan.