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. Author manuscript; available in PMC: 2015 Apr 6.
Published in final edited form as: Med Decis Making. 2010 May 18;31(1):108–120. doi: 10.1177/0272989X10369002

Table 4.

Summary of regression results among men who HAD a previous PSA -- predictors of knowledge, self-efficacy, and decisional consistency.

Characteristic Knowledge Self-efficacy Decisional consistency

Coefficent (SE) (overall p-value)
95% CI
Coefficient (SE) (overall p-value)
95% CI
OR (SE of logOR) (overall p-value††)
95% CI
Age
45–49 (ref) (0.59) (ref) (0.28) NA
50–54 −3.15 (4.56) −13.2, 6.90 −1.37 (2.29) −6.42, 3.67 NA
55 or older 0.38 (3.36) −7.02, 7.78 2.26 (2.43) −3.08, 7.60 NA

Race/ethnicity
White, non-Hsipanic 7.31 (3.76) −0.97, 15.60 6.67 (5.43) −5.28, 18.62 3.58 (0.57) 1.17, 10.91 (0.03)*
Other (ref) (0.08) (ref) (0.25)

Income
<$49,999 (ref) (0.99) (ref) (0.93) (ref) (0.14)
$49,000–$74,999 0.33 (4.06) −8.73, 9.16 1.33 (4.14) −7.79, 10.45 0.784 (0.48) 0.31, 2.02
$75,000 or more 0.50 (3.54) −7.30, 8.30 0.51 (4.52) −9.44, 10.45 2.00 ((0.81) 0.41, 9.74

Education
HS or less (ref) (0.02) (ref) (0.01) (ref)
Some college+ 11.56 (4.08) 2.58, 20.53* 8.29 (2.54) 2.70, 13.88 1.64 (0.68) 0.43, 6.25

Marital Status
Married/living as married −1.37 (2.46) −6.80, 4.05 −0.70 (2.60) −6.42, 5.03 NA
Other (ref) (0.59) (ref) (0.79) NA

Family History
Yes −1.09 (2.79) −7.23, 5.06 −0.39 (3.07) −7.15, 6.37 0.61 (0.75) 0.14, 2.67
No (ref) (0.70) (ref) (0.90) (0.51)

Risk Perception
High/Medium 0.767 (1.94) −3.50, 5.03 −2.86 (2.04) −7.35, 1.64 2.56 (0.56) 0.85, 7.76
Low (ref) (0.70) (ref) (0.19) (ref) (0.10)

Control Preferences
Active 12.94 (2.85) 6.67, 19.21** 5.30 (4.80) −5.26, 15.85 NA
Collaborative 9.32 (3.09) 2.52, 16.12** 2.87 (5.06) −8.27, 14.01 NA
Passive (ref) (0.03) (ref) 0.42 NA

Subjective Norms
Positive 0.33 (2.86) −5.97, 6.36 −0.74 (2.29) −5.78, 4.31 1.92 (0.57) 0.62, 5.90
Negative (ref) (0.91) (ref) (0.75) (0.26)

Social Norms
All/most −4.82 (4.67) −15.09, 5.45 −2.22 (2.87) −8.53, 4.09 1.71 (0.75) 0.29, 7.48
More than half −1.71 (4.04) −10.61, 7.20 −5.81 (3.72) −13.99, 2.37 1.78 (0.82) 0.35, 8.93
Less than half (ref) (0.22) (ref) (0.40) (ref) (0.56)
Don't know −6.46 (3.81) −14.85, 1.94 −1.28 (3.42) −8.80, 6.24 1.16 (0.85) 0.22, 6.09

Physician Discussion
Yes 3.98 (1.49) 0.69, 7.26* 5.18 (1.86) 1.09, 9.28* 2.58 (0.50) 0.96, 6.91
No (ref) (0.02) (ref) (0.02) (0.06)
*

p<0.05

**

p<0.01

***

p<0.001

Knowledge and self-efficacy results are from multivariable linear regression models including all of the characteristics in one model. Overall p-values are Wald F-tests for variables with more than two categories.

††

Due to small number of men who were not consistent, consistency results are from univariate logistic regression models with each of the characteristics.

NA=Results not available due to small cell counts.