Table 18 Current cigar smoking and bladder cancer by inhalation level, cigars per day, and duration

Shanks1998

CPS-I

1 to 2

0.78

(0.29, 1.71)

IRR

Primary

Shanks1998

CPS-I

3 to 4

1.68

(0.77, 3.18)

IRR

Primary

Shanks1998

CPS-I

5+

2.03

(0.97, 3.73)

IRR

Primary

Shanks1998

CPS-I

1 to 2

1.02

(0.20, 2.97)

IRR

Secondary

Shanks1998

CPS-I

3 to 4

2.36

(0.76, 5.50)

IRR

Secondary

Shanks1998

CPS-I

5+

0.32

(0.00, 1.80)

IRR

Secondary

Shapiro2000

CPS-II

1 to 2

0

(0.00, 0.00)

HR

Primary

Shapiro2000

CPS-II

3+

1.9

(0.80, 4.40)

HR

Primary

Shanks1998

CPS-I

None

1.57

(1.00, 2.36)

IRR

Primary

Shanks1998

CPS-I

1.52

(0.02, 8.44)

IRR

Primary

Shanks1998

CPS-I

None

0.77

(0.21, 1.98)

IRR

Secondary

Shanks1998

CPS-I

Slight

2.87

(0.58, 8.40)

IRR

Secondary

Shanks1998

CPS-I

1.45

(0.16, 5.25)

IRR

Secondary

Shapiro2000

CPS-II

0.5

(0.10, 2.10)

HR

Primary

Shapiro2000

CPS-II

Inhalation

3.6

(1.30, 9.90)

HR

Primary

Shapiro2000

CPS-II

<25

0

(0.00, 0.00)

HR

Primary

Shapiro2000

CPS-II

25+

1.1

(0.40, 2.70)

HR

Primary