Table 1. Distribution of kava consumption and potential confounders for cases and controls, Fiji, 2006.
| Characteristics | No. (%) of Drivers | |
|---|---|---|
| Case (n = 140) | Control (n = 752)a | |
| Age of drivers (years) | ||
| 15–24 | 19 (13.6) | 84 (12.9) |
| 25–34 | 48 (34.3) | 220 (31.8) |
| 35–44 | 36 (25.7) | 223 (29.3) |
| 45+ | 37 (26.4) | 223 (25.9) |
| Declined to answer/missing data | 0 (0) | 2 (0.3) |
| Gender | ||
| Female | 6 (4.3) | 35 (6.8) |
| Male | 134 (95.7) | 717 (93.2) |
| Ethnicity | ||
| Fijian (iTaukei) | 42 (30.0) | 154 (21.9) |
| Indian | 96 (68.6) | 551 (70.1) |
| Other | 2 (1.4) | 47 (8.0) |
| Household Income ($FJD) | ||
| ≥$20,000 | 29 (20.7) | 231 (35.3) |
| $10,000 - $19,999 | 38 (27.1) | 239 (38.1) |
| <$10,000 | 66 (47.1) | 275 (25.8) |
| Declined to answer/missing data | 7 (5.0) | 7 (0.9) |
| Acute Kava use (previous 12 hours) | ||
| No | 108 (77.1) | 698 (95.7) |
| Yes | 32 (22.9) | 54 (4.3) |
| Usual Kava use (past 12 months) | ||
| None to less than monthly | 46 (32.9) | 374 (58.3) |
| Once a month to once a week | 50 (35.7) | 221 (25.7) |
| Several times a week to daily | 44 (31.4) | 157 (16.0) |
| Acute alcohol use (previous 12 hours) | ||
| No | 120 (85·7) | 734 (96.5) |
| Yes | 20 (14·3) | 18 (3.5) |
| Time of crash | ||
| 0500 – 1200hrs | 42 (30.0) | 219 (9.8) |
| 1201 – 1900hrs | 50 (35.7) | 387 (78.9) |
| 1901 – 0200hrs | 48 (34.3) | 146 (11.3) |
| Vehicle speed (km per hour) | ||
| ≤50 | 52 (37.1) | 502 (74.4) |
| 51–60 | 29 (20.7) | 160 (21.2) |
| ≥61 | 46 (32.9) | 90 (4.5) |
| Missing data | 13 (9.3) | 0 (0) |
| Car type | ||
| Cars | 88 (62.9) | 468 (67.3) |
| Minibuses/vans | 35 (25.0) | 257 (29.8) |
| Trucks | 17 (12.1) | 27 (2.9) |
| Wet road condition | ||
| No | 109 (77.9) | 680 (94.0) |
| Yes | 31(22.1) | 72 (6.0) |
| Type of driving licence | ||
| Full licence | 114 (81.4) | 712 (94.2) |
| Provisional/ no licence | 26 (18.6) | 40 (5.8) |
| Driver in a crash in the past 5 years | ||
| No | 126 (90.0) | 620 (79.7) |
| Yes | 13 (9.3) | 130 (20.3) |
| Missing data | 1 (0.7) | 2 (<0.1) |
a weighted proportions.