Table 3 Adjusted odds ratios (AORs) and 95% confidence intervals [CI) of factors associated with current smoking among in-school American youth

Age (years)

   Total

   ≤ 12

1.00

1.00

1.00

   13

1.97 [1.57, 2.46]

1.91 [1.42, 2.58]

2.05 [1.47, 2.86]

   14

3.28 [2.64, 4.08]

3.24 [2.41, 4.35]

3.35 [2.42, 4.64]

   15

3.63 [2.92, 4.50]

3.63 [2.71, 4.86]

3.63 [2.62, 4.99]

   16+

5.59 [4.57, 6.83]

5.62 [4.28, 7.37]

5.56 [4.14, 7.55]

Ethnicity

   White

1.00

1.00

1.00

Black or African

American

0.52 [0.44, 0.60]

0.41 [0.34, 0.51]

0.70 [0.56, 0.87]

   Asian

0.45 [0.35, 0.58]

0.32 [0.22, 0.46]

0.65 [0.46, 0.92]

   Hispanic

0.81 [0.71, 0.92]

0.62 [0.51, 0.75]

1.12 0.93, 1.35]

American

Indian/Alaska

Natives

0.98 [0.79, 1.22]

0.75 [0.55, 1.03]

1.31 [1.00, 1.77]

Native Hawaiian/

Other Pacific Islander

0.69 [0.52, 0.93]

0.53 [0.33, 0.87]

0.89 [0.60, 1.31]

Lived with a cigarette smoker

   No

1.00

1.00

1.00

   Yes

2.73 [2.46, 3.04]

2.97 [2.57, 3.43]

2.48 [2.13, 2.89]

Closest friends smoked cigarettes

   None

1.00

1.00

1.00

   One

2.27 [1.91, 2.71]

2.18 [1.70, 2.80]

2.42 [1.91, 3.08]

   Two or more

2.71 [2.21, 3.33]

2.87 [2.05, 4.02]

2.64 [2.11, 3.55]

Perception that it is safe to smoke for only a year or two, if quit after that

   Definitely not

1.00

1.00

1.00

   Probably not

4.12 [3.67, 4.63]

4.54 [3.89, 5.3]

3.62 [3.04, 4.31]

   Probably yes

9.35 [7.92, 11.04]

9.78 [7.64, 12.53]

8.86 [7.06, 11.11]

   Definitely yes

11.82 [8.99, 15.54]

10.35 [6.35, 16.84]

12.21 [8.79, 16.98]

Pocket money ($/week)

   None

1.00

1.00

1.00

   1–10

1.28 [1.06, 1.54]

1.32 [1.03, 1.69]

1.19 [1.00, 1.59]

   11–20

1.78 [1.48, 2.13]

1.70 [1.34, 2.17]

1.88 [1.43, 2.47]

   21–50

2.21 [1.84, 2.67]

2.06 [1.60, 2.66]

2.41 [1.83, 3.18]

   51–100

2.47 [2.00, 3.08]

2.48 [1.85, 3.33]

2.46 [1.79, 3.39]

   >100

2.89 [2.34, 3.56]

2.66 [1.97, 3.59]

3.17 [2.36, 4.25]