Predictor variable— Interface-Design (3 levels—A, B, C)

Coefficient

SE of Coefficient

Z-value

p-Value

Odds Ratio

95% CI

Lower

Upper

B (UCD1)

1.0425

0.1587

6.57

0.000

2.84

2.08

3.87

C (UCD2)

2.5589

0.1751

14.61

0.000

12.92

9.17

18.21

*Results of the test that all slopes are zero: G = 244.062, df = 2, p-Value = 0.000

Goodness-of-Fit Tests

Method

Chi-Square

df

p-Value

Pearson

2.0687

2

0.355

Deviance

2.0497

2

0.359