Treximet ™ Pharmacy Budget Impact Model Database Validation Study

Primary outcomes

1. Mean Number of Triptan Tablets Per Participant in 6-month Follow-up Period: Treatment-naïve Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; the index date was defined as the first date of oral triptan/sumatriptan-naproxen sodium prescription)

   The mean number of tablets per participant was computed using prescription fills dispensed in the 6-month follow-up period. "Other" represents acetaminophen (APAP)/isometheptene/dichlorphenazone and APAP/isometheptene/caffeine, for example. The number of tablets dispensed was obtained from the "quantity dispensed field" in the claims data. Triptan tablets were classified as index and non-index medication (if a different oral triptan was filled from that of the index medication); only oral triptans were considered (i.e., excluded injectable triptans).

2. Mean Health Plan Cost Per Participant for Migraine-related Medications in 6-month Follow-up Period: Treatment-naïve Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; the index date was defined as the first date of oral triptan/sumatriptan-naproxen sodium prescription)

   Health plan cost was defined as the pharmacy costs. Pharmacy costs were computed corresponding to the use of triptans, non-steroidal anti-inflammatory drugs, opioids, and other migraine therapy tablets (ergots and others). Pharmacy costs were calculated as the mean of the total costs of the five drug categories.

3. Mean Total Cost (Health Plan Plus Participant Copay Costs) Per Participant for Migraine-related Medications in 6-month Follow-up Period: Treatment-naïve Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; the index date was defined as the first date of oral triptan/sumatriptan-naproxen sodium prescription)

   Mean Total Cost was defined as the pharmacy cost plus the participant copay. Pharmacy costs were computed corresponding to the use of triptans, non-steroidal anti-inflammatory drugs, opioids, and other migraine therapy tablets (ergots and others). Pharmacy cost plus participant copay was calculated as the mean of the total costs (pharmacy cost plus participant copay) of the five drug categories.

4. Mean Number of Triptan Tablets Per Participant in 6-month Follow-up Period: Treatment-switch Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; index date was defined as the first switch date to oral triptan/sumatriptan-naproxen sodium prescription)

   The mean number of tablets per participant was computed using prescription fills dispensed in the 6-month follow-up period. "Other" represents APAP/isometheptene/dichlorphenazone and APAP/isometheptene/caffeine, for example. The number of tablets dispensed was obtained from the "quantity dispensed field" in the claims data. Triptan tablets were classified as index and non-index medication (if a different oral triptan was filled from that of the index medication); only oral triptans were considered (i.e., excluded injectable triptans).

5. Mean Health Plan Cost Per Participant for Migraine-related Medications in 6-month Follow-up Period: Treatment-switch Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; index date was defined as the first switch date to oral triptan/sumatriptan-naproxen sodium prescription)

   Health Pan Cost was defined as the pharmacy costs. Pharmacy costs were computed corresponding to the use of triptans, non-steroidal anti-inflammatory drugs, opioids, and other migraine therapy tablets (ergots and others). Pharmacy costs were calculated as the mean of the total costs of the five drug categories.

6. Mean Total Cost (Health Plan Plus Participant Copay Costs) Per Participant for Migraine-related Medications in 6-month Follow-up Period: Treatment-switch Analysis

   Time frame: 6-months from the index date (from January 1, 2009 to May 31, 2009; index date was defined as the first switch date to oral triptan/sumatriptan-naproxen sodium prescription)

   Mean Total Cost was defined as the pharmacy cost plus the participant copay. Pharmacy costs were computed corresponding to the use of triptans, non-steroidal anti-inflammatory drugs, opioids, and other migraine therapy tablets (ergots and others). .Pharmacy cost plus participant copay was calculated as the mean of the total costs (pharmacy cost plus participant copay) of the five drug categories.