Table 3.
Test-retest reliability of measures of risk for and protection against tobacco usea
| Time 1 | Time 2 | No. | ICC or κ | 95% CI or SE | ||
| Family historyof tobacco use | ||||||
| Mother used tobacco, % | 47.8 | 48.6 | 1188 | κ = 0.86 | 0.83, 0.89 | |
| Father used tobacco, % | 72.4 | 74.0 | 1148 | κ = 0.75 | 0.71, 0.79 | |
| Number of siblings who used tobacco, mean (SD) | 1.38 (1.5) | 1.40 (1.5) | 392 | ICC = 0.84 | 0.02 | |
| Number of offspring who used tobacco, mean (SD) | 0.68 (1.0) | 0.63 (0.9) | 243 | ICC = 0.87 | 0.02 | |
| Exposure to secondhand smoke | ||||||
| Smoking currently allowed inside home, % no | 56.0 | 57.2 | 1213 | κ = 0.80 | 0.77, 0.83 | |
| Smoking currently allowed in car, % no | 38.2 | 38.4 | 1213 | κ = 0.83 | 0.80, 0.86 | |
| Children currently exposed to smoke inside home, % no | 85.6 | 87.0 | 1229 | κ = 0.65 | 0.58, 0.71 | |
| Alcohol use | ||||||
| Ever used alcohol, % | 91.2 | 89.3 | 522 | κ = 0.41 | 0.29, 0.54 | |
| Drink alcohol currently, % | 80.4 | 75.9 | 515 | κ = 0.59 | 0.50, 0.67 | |
| Age first tried alcohol, years, mean (SD) | 15.9 (2.8) | 15.8 (3.1) | 444 | ICC = 0.70 | 0.02 | |
| Used any form of tobacco when first used alcoholb, % | 68.5 | 62.9 | 143 | κ = 0.64 | 0.47, 0.80 | |
| Used cigarettes when first tried alcoholb, % | 73.0 | 69.7 | 337 | κ = 0.63 | 0.54, 0.72 | |
| How often drink, % at least several times per week | 27.2 | 28.1 | 442 | ICC = 0.80 | 0.02 | |
| Number of drinks when use alcohol, mean (SD)c | 3.10 (2.3) | 3.08 (2.3) | 407 | ICC = 0.76 | 0.02 | |
| Use tobacco now when drink alcohol, % of time | 59.6 | 58.6 | 917 | ICC = 0.78 | 0.01 | |
| Religiosity (scale 1–5)d | ||||||
| My faith involves all of my life, mean (SD) | 2.67 (1.5) | 2.70 (1.5) | 454 | ICC = 0.72 | 0.02 | |
| One should seek God’s guidance when making every important decision, mean (SD) | 3.05 (1.6) | 3.05 (1.6) | 1035 | ICC = 0.84 | 0.01 | |
| In my life I experience the presence of the divine, mean (SD) | 2.81 (1.5) | 2.83 (1.5) | 434 | ICC = 0.70 | 0.02 | |
| My faith sometimes restricts my actions. | 2.39 (1.5) | 2.47 (1.5) | 462 | ICC = 0.63 | 0.03 | |
| Nothing is as important to me as serving God as best I know how, mean (SD) | 2.64 (1.5) | 2.68 (1.5) | 452 | ICC = 0.82 | 0.02 | |
| I try hard to carry my religion over into all my other dealings in life, mean (SD) | 2.62 (1.5) | 2.66 (1.4) | 463 | ICC = 0.70 | 0.02 | |
| My religious beliefs are what really lie behind my whole approach to life, mean (SD) | 2.57 (1.5) | 2.60 (1.4) | 455 | ICC = 0.75 | 0.02 | |
| It doesn’t matter so much what I believe as long as I lead a moral life, mean (SD) | 3.57 (1.5) | 3.53 (1.5) | 462 | ICC = 0.47 | 0.04 | |
| Do you participate or believe in one specific religion or belief system?, % yes | 52.8 | 52.5 | 1224 | κ = 0.71 | 0.67, 0.74 | |
| How frequently do you attend church meetings or gatherings associated with this religion or belief system?, % daily or weekly | 18.1 | 17.6 | 1224 | κ = 0.55 | 0.51, 0.58 | |
| How often do you pray or meditate in an effort to communicate with deity, or with what some people call a “higher power”?, % daily or weekly | 49.5 | 50.7 | 1224 | κ = 0.52 | 0.48, 0.55 | |
| Have you ever participated in a religious or social group that discourages or prohibits tobacco use?, % yes | 12.9 | 12.1 | 703 | κ = 0.53 | 0.45, 0.60 | |
a Some questions were added to the LTUQ between first and second waves of test-retest administration, resulting in lower cell sizes.
b Findings include responses of “yes,” “no,” “unsure,” or “decline to state.”
c ICC calculations excluded two outliers.