Table 3

Results of logistic regression predicting response from incentive amount, survey length and type of cancer

Variable

Results of logistic regression


B

SE

Wald

Odds Ratio

95% CI

p-value

Incentive ($3)

-0.01

0.12

0.01

0.99

(0.78-1.25)

0.92

Survey Length (short)

-0.23

0.12

3.48

0.79

(0.63-1.01)

0.06

Prostate cancer (Colon)

0.81

0.15

28.81

2.24

(1.68-3.02)

< 0.01

Breast cancer (Colon)

0.95

0.15

39.26

2.59

(1.93-3.47)

< 0.01

Constant

0.01

0.14

.01

1.01

(0.77-1.33)

0.92

Cox and Snell R2

0.043


an = 1150

b Reference category is in parentheses.

cSignificant differences in response for type of cancer hold when controlling for age, race, marital status and stage of cancer.

Kelly et al. BMC Medical Research Methodology 2010 10:65   doi:10.1186/1471-2288-10-65

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