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Table 2 Hierarchical multiple regression results predicting total sun protection behaviors, n = 441

From: Correlates of sun protection behaviors among melanoma survivors

 

b

95% CI b

β

t(419)

p

Demographics

 Age

.003

.00 to .01

.054

1.40

.161

 Education

.089**

.03 to .15

.111

3.14

.002

 Marital status

.049

−.02 to .11

.052

1.50

.134

 Sex

−.033

−.09 to .03

−.045

−1.12

.264

   

Step 1 ∆R2= .032**

Cancer-related factors

 Months since surgery

−.002

−.01 to .01

−.013

−.39

.700

 Disease stage

−.044

−.11 to .02

−.045

−1.28

.200

   

Step 2 ∆R2=.001

Skin cancer risk factors

 Number of risk factors

.029

.00 to .06

.063

1.80

.072

 Sunburn in past year

−.113

−.23 to .01

−.066

−1.88

.061

   

Step 3 ∆R2=.043**

Melanoma knowledge and beliefs

 Knowledge

.009

−.02 to .03

.028

.77

.442

 Severity

−.048

−.13 to .03

−.053

−1.16

.246

 Controllability

.012

−.06 to .09

.011

.33

.745

 Risk of recurrence

.019

−.06 to .09

.019

.51

.612

   

Step 4 R2=.030**

Psychological

 Distress about melanoma

.011

−.02 to .04

.034

.78

.437

 Worry about recurrence

.045

−.02 to .11

.077

1.47

.141

   

Step 5 ∆R2=.018*

Social influence

 Physician influence

.093**

.05 to .13

.167

4.45

.000

 Descriptive Norms

.017

−.05 to .09

.019

.50

.614

 Injunctive norms

.086*

.02 to .16

.102

2.41

.016

   

Step 6 ∆R2=.214**

Protection Beliefs

 Benefits

.061

−.03 to .15

.052

1.40

.163

 Barriers

−.145**

−.23 to −.06

−.142

−3.43

.001

 Self-efficacy

.369**

.29 to .44

.434

9.63

.000

   

Step 7 ∆R2=.202**

  1. Note. * p <. 05, **p < .01. The regression coefficients and t-tests are for the full model that included all predictors. Total R2 for the model is .539, F(20,420) = 24.56, p < .001