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Table 6.14 2003 NSDUH CAI Audit Trail Timing Data: Total Non-Core Sections
Age Category 12-17 18 +
Year of Interest 2001 2002 2003 2001 2002 2003
Sample Size 7,581 22,871 21,889 15,257 42,874 43,530
Summary Statistics (Minutes)
Mean (F) 21.6 22.0 20.1 25.0 26.2 22.0
Variance (σ 2 ) 64.3 59.2 325.8 141.5 125.4 278.4
Standard Deviation (σ) 8.0 7.7 18.0 11.9 11.2 16.7
Quartiles
Maximum 85.4 110.6 2,466.2 328.7 256.1 2,838.6
Q3 25.5 25.8 23.4 29.8 31.0 26.2
Median 20.3 20.9 18.8 22.5 24.0 20.0
Q1 16.2 16.9 15.2 17.3 18.8 15.3
Minimum 0.1 0.0 0.2 0.1 0.0 0.1
Range 85.3 110.6 2,466.1 328.6 256.1 2,838.6
Mode 15.0 19.9 18.0 20.6 21.7 15.4
Percentiles
Extremes
99% 48.5 46.8 43.0 65.2 63.8 55.3
95% 35.7 35.8 32.9 46.8 46.8 40.1
90% 31.6 31.6 28.7 39.2 39.8 33.9
10% 13.1 13.8 12.4 13.6 15.1 12.2
5% 11.5 12.2 10.9 11.8 13.1 10.6
1% 8.5 9.1 8.2 7.8 9.7 7.9
5 Highest Values (Highest) 85.4 110.6 2,466.2 328.7 256.1 2,838.6
79.5 107.2 125.4 169.9 241.5 200.9
75.8 78.8 109.8 168.4 192.9 146.4
73.8 76.0 105.4 167.5 155.0 131.4
72.7 75.5 105.1 140.1 143.7 116.1
5 Lowest Values 0.5 0.1 0.4 0.1 0.1 0.3
0.4 0.1 0.4 0.1 0.1 0.3
0.4 0.1 0.2 0.1 0.1 0.1
0.2 0.1 0.2 0.1 0.1 0.1
(Lowest) 0.1 0.0 0.2 0.1 0.0 0.1
Note: Time recording begins at INTROSD in the Special Drugs Module and stops recording after ENDAUDIO in
either the Serious Mental Illness Module or theYouth Mental Health Service Utilization Module.
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