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. 2015 Jul 9;8:361–373. doi: 10.2147/JPR.S82396

Table 2.

Abnormal UDT results reported versus investigator risk assessment for misuse, abuse, and diversion

Misuse Investigator risk assessment level
Low (N=575) Moderate (N=97) High (N=11) Total (N=684a)
Patients with ≥1 abnormal UDT result at Visit 1b, n (%) 128 (22.3) 26 (26.8) 5 (45.5) 160 (23.4)
 Patients positive for illicit substance 37 (6.4) 11 (11.3) 3 (27.3) 51 (7.5)
 Patients negative for expected opioid use 101 (17.6) 18 (18.6) 2 (18.2) 122 (17.8)
Patients who completed Visit 3, n 301 45 5 351
Patients with ≥1 abnormal UDT result at Visit 3c, n (%) 83 (27.6) 16 (35.6) 2 (40.0) 101 (28.8)
 Patients positive for illicit substance 18 (6.0) 5 (11.1) 1 (20.0) 24 (6.8)
 Patients positive for unaccounted opioid 70 (23.3) 14 (31.1) 1 (20.0) 85 (24.2)
 Patients negative for expected opioid use 11 (3.7) 0 (0.0) 0 (0.0) 11 (3.1)
Abuse Low (N=610) Moderate (N=61) High (N=12) Total (N=684a)
Patients with ≥1 abnormal UDT result at Visit 1b, n (%) 136 (22.3) 19 (31.1) 4 (33.3) 160 (23.4)
 Patients positive for illicit substance 40 (6.6) 9 (14.8) 2 (16.7) 51 (7.5)
 Patients negative for expected opioid use 107 (17.5) 12 (19.7) 2 (16.7) 122 (17.8)
Patients who completed Visit 3, n 319 26 6 351
Patients with ≥1 abnormal UDT result at Visit 3c, n (%) 92 (28.8) 7 (26.9) 2 (33.3) 101 (28.8)
 Patients positive for illicit substance 21 (6.6) 3 (11.5) 0 (0.0) 24 (6.8)
 Patients positive for unaccounted opioid 78 (24.5) 5 (19.2) 2 (33.3) 85 (24.2)
 Patients negative for expected opioid use 11 (3.4) 0 (0.0) 0 (0.0) 11 (3.1)
Diversion Low (N=643) Moderate (N=32) High (N=7) Total (N=684a)
Patients with ≥1 abnormal UDT result at Visit 1b, n (%) 143 (22.2) 13 (40.6) 3 (42.9) 160 (23.4)
 Patients positive for illicit substance 44 (6.8) 6 (18.8) 1 (14.3) 51 (7.5)
 Patients negative for expected opioid use 111 (17.3) 8 (25.0) 2 (28.6) 122 (17.8)
Patients who completed Visit 3, n 336 11 3 351
Patients with ≥1 abnormal UDT result at Visit 3c, n (%) 97 (28.9) 4 (36.4) 0 (0.0) 101 (28.8)
 Patients positive for illicit substance 23 (6.8) 1 (9.1) 0 (0.0) 24 (6.8)
 Patients positive for unaccounted opioid 82 (24.4) 3 (27.3) 0 (0.0) 85 (24.2)
 Patients negative for expected opioid use 11 (3.3) 0 (0.0) 0 (0.0) 11 (3.1)

Notes:

a

Includes patients who were missing assignment of risk level, 1 for abuse, 1 for misuse, and 2 for diversion;

b

percentage is calculated using the number of patients in each risk category (low, moderate, high, total) as the denominator;

c

percentage is calculated using the number of patients who completed Visit 3 within each risk category (low, moderate, high, total) as the denominator.

Abbreviation: UDT, urine drug test.