Table 8

Final multiple linear regression models, with and without outlier, of the natural logarithm of the rate of stomach cancer.

WITHOUT OUTLIER


Parameter

Estimate

Std Error

t

df

Pr(>| t|)

95% Conf Int


Intercept

-14.15

0.11

-134.44

151

< 1 × 10 -10

-14.35 – -13.94

Sex

-1.07

0.08

-13.15

151

< 1 × 10 -10

-1.23 – -0.91

Race

1.74

0.08

21.42

151

< 1 × 10 -10

1.58 – 1.90

Lauren type

2.59

0.15

17.53

151

< 1 × 10 -10

2.30 – 2.89

Age

0.52

0.01

36.69

151

< 1 × 10 -10

0.49 – 0.55

age:Lauren type

-0.24

0.02

-12.19

151

< 1 × 10 -10

-0.28 – -0.20

race:Lauren type

-0.77

0.11

-6.72

151

3.6 × 10 -10

-0.99 – -0.54

sex:Lauren type

0.83

0.11

7.28

151

< 1 × 10 -10

0.61 – 1.06

Overall Model

Std Error

R2

F

df num

df den

P

0.36

0.95

421

7

151

< 1 × 10 -10

WITH OUTLIER

Parameter

Estimate

Std Error

t

df

Pr(>| t|)

95% Conf Int

Intercept

-14.23

0.11

-125.58

152

< 1 × 10 -10

-14.45 – -14.01

Sex

-1.12

0.09

-12.73

152

< 1 × 10 -10

-1.29 – -0.94

Race

1.79

0.09

20.38

152

< 1 × 10 -10

1.62 – 1.96

Lauren type

2.68

0.16

16.71

152

< 1 × 10 -10

2.36 – 2.99

Age

0.53

0.02

34.72

152

< 1 × 10 -10

0.50 – 0.56

age:Lauren type

-0.25

0.02

-11.74

152

< 1 × 10 -10

-0.30 – -0.21

race:Lauren type

-0.82

0.12

-6.59

152

6.7 × 10 -10

-1.06 – -0.57

sex:Lauren type

0.88

0.12

7.11

152

< 1 × 10 -10

0.64 – 1.13

Overall Model

Std Error

R2

F

df num

df den

P

0.39

0.95

384

7

152

< 1 × 10 -10


Wachtel et al. BMC Cancer 2006 6:65   doi:10.1186/1471-2407-6-65

Open Data