Kava—use before or during admission period 1992–97 |
| Yes | 33 | 103 | 1.41 | 0.73 | 2.73 | 0.303 |
a | No | 50 | 199 | 1.00 | | | |
Kava—level of use |
a | None | 50 | 199 | 1.00 | | | |
| 1 night/week for a few hours | 4 | 6 | 3.43 | 0.76 | 15.58 | |
| >1 night/week for a few hours | 7 | 13 | 2.17 | 0.75 | 6.30 | |
| About 2 nights a week | 6 | 17 | 1.61 | 0.57 | 4.56 | 0.342 |
| Drink kava during the day as well as at night | 2 | 14 | 0.63 | 0.12 | 3.29 | |
| Sometimes drink for 24 hour sessions | 13 | 48 | 1.11 | 0.45 | 2.75 | |
Alcohol—use before or during admission period 1992–97 |
| Yes | 41 | 143 | 1.21 | 0.61 | 2.39 | 0.590 |
a | No | 40 | 157 | 1.00 | | | |
Alcohol—level of use |
a | None | 40 | 157 | 1.00 | | | |
| Light | 5 | 15 | 1.91 | 0.54 | 6.73 | |
| Moderate | 6 | 31 | 0.86 | 0.29 | 2.51 | 0.679 |
| Heavy | 26 | 92 | 1.26 | 0.60 | 2.64 | |
Tobacco—use before or during admission period 1992–97 |
| Yes | 71 | 252 | 1.29 | 0.61 | 2.70 | 0.500 |
a | No | 11 | 50 | 1.00 | | | |
Tobacco—level of use |
a | None | 11 | 50 | 1.00 | | | |
| Up to 15 cigarettes a day | 5 | 8 | 3.03 | 0.72 | 12.70 | |
| From 15 up to 25 cigarettes a day | 2 | 33 | 0.26 | 0.05 | 1.29 | |
| 25 cigarettes a day | 36 | 105 | 1.80 | 0.80 | 4.06 | 0.019 |
| More than 25 cigarettes a day | 26 | 99 | 1.14 | 0.49 | 2.64 | |
Petrol—use before or during admission period 1992–97 |
| Yes | 5 | 14 | 1.32 | 0.41 | 4.22 | 0.648 |
a | No | 76 | 279 | 1.00 | | | |
Cannabis—use before or during admission period 1992–97 |
| Yes | 5 | 33 | 0.46 | 0.16 | 1.35 | 0.137 |
a | No | 74 | 257 | 1.00 | | | |
Odds ratios for the association between IHD and kava use adjusted for a history of alcohol and tobacco use, petrol sniffing and body size
|
“a” = reference category
| |
Cases
|
Controls
|
OR
|
95%CI
| |
p Value*
|
Kava—use before or during admission period 1992–97 |
| Yes | 33 | 103 | 1.51 | 0.75 | 3.05 | 0.247 |
a | No | 50 | 199 | 1.00 | | | |
Kava—level of use |
a | None | 50 | 199 | 1.00 | | | |
| 1 night/week for a few hours | 4 | 6 | 3.48 | 0.74 | 16.30 | |
| >1 night/week for a few hours | 7 | 13 | 1.64 | 0.48 | 5.55 | |
| about 2 nights a week | 6 | 17 | 1.83 | 0.62 | 5.44 | 0.469 |
| Drink kava during the day as well as at night | 2 | 14 | 0.63 | 0.12 | 3.38 | |
| Sometimes drink for 24 hour sessions | 13 | 48 | 1.30 | 0.51 | 3.35 | |