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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.