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Table 6.7 2003 NSDUH CAI Audit Trail Timing Data: Alcohol Section
Age Category 12-17 18 +
Year of Interest 2001 2002 2003 2001 2002 2003
Sample Size 7,560 22,811 21,835 15,193 42,755 43,410
Summary Statistics (Minutes)
Mean (F) 1.8 2.0 1.9 2.5 2.7 2.6
Variance (σ 2 ) 1.8 1.9 1.7 3.2 2.7 2.5
Standard Deviation (σ) 1.3 1.4 1.3 1.8 1.6 1.6
Quartiles
Maximum 19.7 17.7 16.3 79.5 51.6 61.9
Q3 2.4 2.5 2.5 3.2 3.4 3.3
Median 1.5 1.8 1.7 2.2 2.4 2.4
Q1 0.8 0.9 0.9 1.4 1.6 1.6
Minimum 0.0 0.0 0.0 0.0 0.0 0.0
Range 19.7 17.7 16.3 79.5 51.6 61.9
Mode 0.6 2.3 2.3 2.4 2.3 2.3
Percentiles
99% 6.2 6.5 6.2 8.1 7.9 7.8
95% 4.3 4.6 4.4 5.4 5.5 5.4
90% 3.4 3.7 3.6 4.3 4.6 4.6
10% 0.4 0.5 0.5 0.8 1.0 1.0
5% 0.3 0.4 0.4 0.5 0.7 0.7
1% 0.2 0.2 0.2 0.2 0.3 0.3
Extremes
5 Highest Values (Highest) 19.7 17.7 16.3 79.5 51.6 61.9
14.2 16.5 16.1 47.6 49.3 27.2
14.1 16.3 13.2 25.3 34.9 23.5
13.9 14.0 12.2 21.6 30.3 22.5
13.5 13.8 12.2 19.2 28.0 22.0
5 Lowest Values 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0
(Lowest) 0.0 0.0 0.0 0.0 0.0 0.0
Note: Time recording begins at ALCINTR1 and stops recording after ALCC30 in the Alcohol Module.
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