Table 1

Stepwise spatial regression of the male OC incidence at the 296 townships.

Coef

95% C.I.

p-value

mean

SD


Full model

const

14.37

(4.99,23.8))

0.003

BQC

0.089

(0.03,0.15)

0.003

28.3

9.1

CS

-0.048

(-0.1,0.01)

0.091

62.4

8.2

As

0.443

(0.26,0.63)

<0.001

5.42

2.59

Cd

0.404

(-0.15,0.97)

0.153

0.16

0.77

Cr

-0.182

(-0.49,0.12)

0.246

1.22

2.53

Cu

0.078

(-0.04,0.19)

0.178

7.77

8.16

Hg

-1.892

(-5.76,1.98)

0.339

0.17

0.12

Pb

-0.058

(-0.18,0.06)

0.347

8.95

4.24

Ni

0.499

(0.23,0.77)

<0.001

2.76

2.93

Zn

-0.071

(-0.14,0)

0.054

12.8

12.8

Income

-0.003

(-0.01,0)

0.288

616

93.8

Fd

0.004

(-0.01,0.02)

0.620

30.8

32.9

Age

-0.17

(-0.37,0.03)

0.096

34.8

2.48

Aborigine

0.702

(-0.72,2.12)

0.334

0.12

0.34

R2 = 53.52%


Moran's I = -0.021

p-value = 0.677


Concise model

const

3.05

(1.36,4.75)

0.001

BQC

0.078

(0.03,0.12)

0.001

As

0.466

(0.28,0.65)

<0.001

Ni

0.326

(0.17,0.48)

<0.001

Aborigine

1.43

(0.14,2.72)

0.031

R2 = 50.98%

Moran's I = -0.013

p-value = 0.81


Regression result on prevalence of betel quid chewing (BQC) and cigarette smoking (CS), 8 heavy metal concentrations (As~Zn), average income, age, factory density (Fd) of the area, and indicator for residency of aboriginal (1 if yes, and 0 otherwise). Government defined an area as a residency of aboriginal if more than 40% of its population is comprised of aboriginals. Ni is nickel concentration and As is arsenic concentration.

Su et al. BMC Public Health 2010 10:67   doi:10.1186/1471-2458-10-67

Open Data