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Table 2 Adjusted* polychotomous logistic regression modeling for odds of early refusal and early consent

From: Demographic and occupational predictors of early response to a mailed invitation to enroll in a longitudinal health study

  Early Refusal vs. Late/Non-response Early Consent§vs. Late/Non-response
  OR 95% CI OR 95% CI
Sex     
Male# -- -- -- --
Female 1.14 (0.94, 1.39) 1.62 (1.56, 1.68)
Age     
Per year 1.03 (1.02, 1.04) 1.04 (1.04, 1.04)
Education     
No high school diploma# -- -- -- --
High school graduate 1.25 (0.79, 1.95) 1.08 (1.02, 1.15)
Some college 1.93 (1.21, 3.09) 1.30 (1.21, 1.39)
College graduate 2.42 (1.51, 3.87) 1.51 (1.41, 1.62)
Advanced degree 4.03 (2.48, 6.55) 1.74 (1.61, 1.89)
Marital status     
Married# -- -- -- --
Not married 0.79 (0.66, 0.94) 0.86 (0.83, 0.89)
Race/ethnicity     
White non-Hispanic# -- -- -- --
Black non-Hispanic 0.44 (0.33, 0.59) 0.49 (0.47, 0.52)
Hispanic 0.67 (0.46, 0.96) 0.69 (0.64, 0.73)
Asian/Pacific Islander 1.18 (0.89, 1.56) 0.75 (0.71, 0.80)
American Indian 0.85 (0.38, 1.91) 0.87 (0.75, 1.01)
Other 0.54 (0.22, 1.30) 0.72 (0.63, 0.82)
Service branch     
Army# -- -- -- --
Air Force 1.88 (1.52, 2.32) 0.79 (0.76, 0.82)
Navy 1.96 (1.55, 2.46) 0.92 (0.88, 0.96)
Marine Corps 0.97 (0.61, 1.54) 0.90 (0.84, 0.96)
Coast Guard 1.69 (0.89, 3.23) 0.91 (0.80, 1.03)
Duty status     
Active duty# -- -- -- --
Reserve/National Guard 1.24 (1.05, 1.46) 1.10 (1.06, 1.13)
Previous deployment status     
Non-deployed# -- -- -- --
Deployed 0.84 (0.70, 1.01) 1.05 (1.01, 1.09)
Occupational category     
Electrical/mechanical# -- -- -- --
Combat specialists 1.41 (1.06, 1.87) 1.02 (0.97, 1.07)
Electronic equipment repair 1.45 (1.05, 2.01) 1.13 (1.07, 1.21)
Communications/intelligence 1.13 (0.77, 1.68) 1.13 (1.05, 1.21)
Health care specialists 1.04 (0.73, 1.49) 1.16 (1.09, 1.24)
Other technical & allied specialists 0.98 (0.53, 1.81) 1.20 (1.09, 1.32)
Functional support specialists 1.51 (1.14, 2.01) 1.12 (1.06, 1.18)
Craft workers 1.23 (0.77, 1.96) 1.04 (0.95, 1.14)
Service & supply handlers 1.19 (0.83, 1.73) 1.06 (0.99, 1.12)
Trainees, other 1.78 (1.17, 2.72) 1.05 (0.97, 1.14)
  1. * Adjusted for all variables listed.
  2. Early refusers are invitees who communicated their unwillingness to participate in the study prior to 01 September 2001.
  3. Late/non-responders are invitees who responded after 01 September 2001 or failed to respond in any manner.
  4. § Early consenters are invitees who completed an online or paper survey prior to 01 September 2001.
  5. OR = adjusted odds ratio; CI = 95% confidence interval.
  6. # Reference category.