Table 2.
Descriptive statistics of the characteristics of the sample.
| Survey year | TOTAL |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | 2006 | 2010 | 2014 | |||||||||
| N (%) | Mean (SD) | N (%) | Mean (SD) | N (%) | Mean (SD) | N (%) | Mean (SD) | N (%) | Mean (SD) | |||
| Sex | Boy | 75,709 (48.8) | 82,205 (49.0) | 84,803 (49.1) | 86,242 (49.2) | 328,959 (49.0) | ||||||
| Girl | 79,591 (51.2) | 85,451 (51.0) | 87,926 (50.9) | 89,157 (50.8) | 342,125 (51.0) | |||||||
| Missing | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||||||
| Age category | 11 | 52,773 (34.3) | 53,433 (32.1) | 55,477 (32.4) | 56,048 (32.2) | 217,731 (32.7) | ||||||
| 13 | 52,937 (34.4) | 56,445 (33.9) | 57,532 (33.6) | 60,333 (34.6) | 227,247 (33.9) | |||||||
| 15 | 48,296 (31.4) | 56,631 (34.0) | 58,107 (34.0) | 57,771 (33.2) | 220,805 (32.9) | |||||||
| Missing | 1294 (0.8) | 1147 (0.7) | 1613 (0.9) | 1247 (0.7) | 5304 (0.8) | |||||||
| Family Affluence Scale (FAS) | 0.41 (0.273) | 0.47 (0.281) | 0.56 (0.281) | 0.55 (0.279) | 0.50 (0.285) | |||||||
| Missing | 3494 (2.3) | 6008 (3.7) | 8351 (5.1) | 13,533 (8.4) | 31,386 (4.7) |
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| Perceived Family Wealth (PFW) | 3.58 (0.880) | 3.65 (0.892) | 3.63 (0.895) | 3.59 (0.890) | 3.61 (0.890) | |||||||
| Missing | 2517 (1.6) | 4249 (2.5) | 6379 (3.7) | 7668 (4.4) | 20,813 (3.1) |
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| Lifetime alcohol consumption | Never | 110,183 (70.9) |
111,512 (66.5) |
126,282 (73.1) |
139,430 (79.5) |
487,407 (72.6) |
||||||
| At least once | 35,026 (22.6) |
41,838 (25.0) |
38,640 (22.4) |
24,648 (14.1) |
140,152 (20.9) |
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| Missing | 10,091 (6.5) |
14,306 (8.5) |
7807 (4.5) |
11,321 (6.5) |
43,528 (6.5) |
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| Frequency of alcohol consumption | Less than weekly | 126,080 (81.2) |
131,558 (78.5) |
146,046 (84.6) |
153,419 (87.5) |
557,103 (83.0) |
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| At least weekly | 19,129 (12.3) |
21,792 (13.0) |
18,876 (10.9) |
10,659 (6.1) |
70,456 (10.5) |
|||||||
| Missing | 10,091 (6.5) |
14,306 (8.5) |
7807 (4.5) |
11,321 (6.5) |
43,528 (6.5) |
|||||||
| Lifetime drunkenness | Never or once | 128,696 (82.9) |
130,070 (77.6) |
142,059 (82.2) |
150,174 (85.6) |
550,999 (82.1) |
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| At least twice | 25,367 (16.3) |
25,606 (15.3) |
25,016 (14.5) |
16,568 (9.4) |
92,557 (13.8) |
|||||||
| Missing | 1237 (0.8) |
11,980 (7.1) |
5654 (3.3) |
8657 (4.9) |
27,531 (4.1) |
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