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+Overall Structure of vocabulary meets criteria described here: http://www.ohdsi.org/web/wiki/doku.php?id=documentation:vocabulary:drug
+Original AMT is presented as part of Australian SNOMED that contains only drugs with the following classes:
+^ SOURCE CLASS                    ^ NEW CLASS           |
+| AU Qualifier                    | AU Qualifier        |
+| AU Substance                    | AU Substance        |
+| Trade product                   | Trade Product       |
+| containered trade product pack  | Contain Trade Pack  |
+| trade product unit of use       | Trade Product Unit  |
+| trade product pack              | Trade Product Pack  |
+| medicinal product               | Medicinal Product   |
+| medicinal product pack          | Med Product Pack    |
+| medicinal product unit of use   | Med Product Unit    |
+AU Qualifier represents Dose Form (137011000036104 ointment) or Unit (700000751000036105 microgram/mL), AU Substance - Ingredient (2319011000036106 metformin hydrochloride).
+Trade Product refers to Brand Name (For example, 61131000168107 Avandamet 4/1000). According to OMOP CDM rules we use as Brand Names only those Trade products that don't replicate names of ingredients (for example, 106561000036102 Acetylcysteine).
+Medicinal Product represents ingredient(s) of a drug and duplicate the corresponding AU Substance (For example, 21614011000036102 metformin or 160681000036109 saxagliptin + metformin). Therefore, medicinal products haven’t made it into the AMT vocabulary.
+Medicinal product unit of use represents Clinical Drug or Quantified Clinical Drug (For example, 23360011000036106 metformin hydrochloride 1 g tablet).
+Medicinal product pack corresponds to Clinical Drug Box (For example, 16921000036107  metformin hydrochloride 1 g tablet, 100).
+Trade product pack is Branded Drug Box, for instance,  11491011000036102 Avandamet 2/1000 (metformin hydrochloride 1 g + rosiglitazone 2 mg) tablet: film-coated, 56 tablets
+Trade product unit of use  is Branded Drug or Quantified  Branded Drug  (4657011000036107 Avandamet 4/1000 tablet: film-coated).
+Containered trade product pack refers to Branded Drug Box, for instance,  18061011000036103 Avandamet 4/1000 (metformin hydrochloride 1 g + rosiglitazone 4 mg) tablet: film-coated, 56 tablets, blister pack
+AMT doesn't provide Supplier as a separate concept, so we parsed drug descriptions in order to get suppliers, for example, Pfizer or Ipc (stands for Independent Pharmacy Cooperative).
+**Drug strength**
+AMT contains drug strength only for medicinal product unit of use, so the relationship between classes were followed in order to obtain the dosages for other drug classes.
+There are some features:
+•	AMT has oral solutions presented in 5 ml volume. As this volume is a volume of a teaspoon, we classifiend this drugs not as quantified but as regular drugs with denominator_value =1.
+•	Concentration given is useless
+87010011000036105  bicarbonate + sodium chloride nasal drops, 60 x 2.16 g sachets
+•	No dosage given
+86615011000036106 Aqueous Cream (Orion) (emulsifying wax + liquid paraffin + water purified + white soft paraffin) cream
+**Packs**
+In AMT some original codes represent packs, OMOP-codes for their content were generated. For example, 736221000168103 Afeme Duo (Clotrimazole 10 Mg / 1 G) Cream [10 G] (&) (Fluconazole 150 Mg) Hard Capsule [1 Capsule], 1 Pack
+**Concepts that are non-drugs**
+AMT vocabulary contains devices such as bandages, syringes, food supplements, etc. Please see http://www.ohdsi.org/web/wiki/doku.php?id=documentation:vocabulary:domains for Domain rules definition. Non-drugs don't have RxNorm or RxNorm Extension equivalents and relationships, they are presented in OMOP vocabulary as standard concepts. For example, 48846011000036103 Accu-Chek Go diagnostic strip/

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