Skip to main content

Table 3 Adjusted odds of enrollment status with prior healthcare utilization in the Millennium Cohort Study by panel, among active-duty personnel

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 = 86,401a N = 144,954a
Exposureb,c OR 95% CI OR 95% CI
Number of outpatient visitsd     
  None 1.00 Ref 1.00 Ref
  1-3 visits 1.13* 1.05, 1.20 1.26* 1.20, 1.33
  4-12 visits 1.17* 1.10, 1.25 1.41* 1.34, 1.48
  >12 visits 1.14* 1.06, 1.23 1.44* 1.36, 1.52
Cumulative days hospitalizedd     
  None 1.00 Ref 1.00 Ref
  1-2 days 0.88* 0.80, 0.97 0.96 0.89, 1.03
  More than 2 days 0.75* 0.68, 0.83 0.89* 0.83, 0.96
Any diagnosed mental disordere     
  No 1.00 Ref 1.00 Ref
  Yes 0.79* 0.75, 0.83 0.89* 0.85, 0.93
Any reported injuryf     
  No 1.00 Ref 1.00 Ref
  Yes 1.03 0.99, 1.07 1.10* 1.07, 1.13
  1. OR, odds ratio; CI, confidence interval; Ref, reference category.
  2. *Indicates significance at the P < 0.05 level.
  3. aOnly active-duty personnel with complete demographic and covariate information were included.
  4. bExposures were evaluated during the 12 months prior to each enrollment cycle (1 June 2003 – 1 June 2004 for Panel 2 and 5 June 2006 – 5 June 2007 for Panel 3).
  5. cEach exposure was modeled separately with enrollment status and adjusted for sex, age, education, marital status, race/ethnicity, service branch, deployment experience, and military occupation. Military pay grade was excluded from these models due to small numbers of officers in these young, active-duty populations.
  6. dAny cause healthcare utilization in the 12 months prior to the first day of the enrollment cycle.
  7. eAny reported principal diagnosis for a mental disorder, as defined by ICD-9 codes 290-319.
  8. fAny reported principal diagnosis for an injury, as defined by ICD-9 codes 800-959, 990-999.