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. 2005 Jan 1;330(7481):20. doi: 10.1136/bmj.38268.579097.55

Table 1.

Distribution of type of drugs by method of administration. Values are numbers (percentages) unless stated otherwise

ATC-code ATC group name Open administration (n=1630) Covert administration (n=243) P value for difference (χ2)
A01-A09 and A13-A14 Alimentary tract and metabolism, excluding drugs used in diabetes and vitamins and mineral supplements 767 (47) 98 (40) 0.050
A10 Drugs used in diabetes 158 (10) 17 (7) 0.178
A11, A12, B03A, and B03B Vitamins and mineral supplements 731 (45) 93 (39) 0.054
B01 Antithrombotic agents 560 (34) 71 (29) 0.114
C01-C10 Cardiovascular system 887 (54) 97 (40) <0.001
G01-G04 Genitourinary system and sex hormones 268 (16) 39 (16) 0.878
H01-H05 Systemic hormonal preparations, excluding sex hormones and insulin 214 (13) 26 (11) 0.291
J01-J07 Anti-infectives for systemic use 189 (12) 46 (19) 0.001
L01-L04 Antineoplastic and immunomodulating agents 23 (1) 3 (1) 0.826
M01-M05 Musculoskeletal system 189 (12) 23 (10) 0.328
N02 Analgesics 528 (32) 92 (38) 0.091
N03 Antiepileptics 94 (6) 25 (10) 0.007
N04 Antiparkinsonian drugs 107 (7) 12 (5) 0.332
N05 Psycholeptics 880 (54) 137 (56) 0.485
N05A Antipsychotics 416 (26) 78 (32) 0.030
N05B Anxiolytics 358 (22) 74 (31) 0.003
N05C Hypnotics and sedatives 362 (22) 40 (17) 0.042
N06A Psychoanaleptics: antidepressants 505 (31) 62 (26) 0.084
N06D Psychoanaleptics: antidementia drugs 16 (1) 0 0.121
R01-R07 Respiratory system 263 (16) 27 (11) 0.043
Other* Unknown* 202 (12) 4 (2) -

ATC-code=Anatomical Therapeutic Chemical Classification.

*

Drugs without ATC-code: mainly laxatives, some vitamins or nutritional supplements and homoeopathic or natural medicines. Drugs recorded in illegible handwriting are also in this group.