Abstracts 161 in MI than in UA patients (11.2% versus 7.1%%), 12- year cumulative mortality was nearly identical (49.2% MI versus 49.8% UA) in the two groups. Average post- ACS life expectancy was 15.604 years (15.460 UA and 15.649 MI). CONCLUSIONS: Despite significant differences in acute phase mortality, UA and MI patients have similar life ex- pectancies. INDIRECT COSTS TPIC1 INDIRECT COSTS OF MIGRAINEURS: THREE DIFFERENT APPROACHES TO VALUING LOST WORKPLACE PRODUCTIVITY Thornhill JC, Lofland JH Thomas Jefferson University, Philadelphia, PA, USA OBJECTIVE: To evaluate application of variables from an observational study data set to calculate and compare workplace absenteeism and productivity costs using human capital approach (HCA) and friction cost approach (FCA). METHODS: This was a supplemental analysis to a com- pleted prospective, 6-month observational migraine out- comes study within a managed care organization (MCO). Data collection included pharmacy claims, patient occupa- tion, and patient self-reported workplace absenteeism, and productivity at baseline, 3 months and 6 months post- sumatriptan treatment. Patients were included in this sup- plemental analysis if they completed all three self-reported surveys and used sumatriptan according to the MCO prior authorization program. The HCA was calculated as: [(number days missed due to migraine) + (days worked with migraine symptoms)(100% - % effectiveness while working with migraine symptoms)/100%]  (daily wage). The FCA was calculated as (average number of migraines per month)(average number of lost work days due to mi- graine)(work hours/day)(dollars of production/employee). RESULTS: There were 160 patients who met the inclu- sion criteria for this analysis. The total indirect costs us- ing the HCA and FCA methodologies were $97,024 and $124,260, respectively. CONCLUSION: The methodology assumptions and esti- mates employed to value lost productivity in this migraine population significantly impact the results obtained. Pro- spective data collection may be required to minimize as- sumptions and accurately capture variables needed to cal- culate and understand each indirect cost method. Further evaluation of the post hoc analysis of observational data sets to evaluate productivity costs is warranted. TPIC2 IMPACT OF ATTENTION DEFICIT AND HYPERACTIVITY DISORDER (ADHD): A SURVEY OF PRIMARY CAREGIVERS Jackson SE, Peeples P Alza Corporation, Palo Alto, CA, USA ADHD is believed to be one of the most prevalent psychi- atric disorders of childhood; however, the cost of ADHD is not well understood. OBJECTIVE: To examine the impact of ADHD on indi- rect costs and resource utilization associated with sched- uled and unscheduled visits to healthcare professionals. METHODS: In 1997, 150 primary caregivers for ADHD children completed a telephone survey. Scheduled and emergency visits to providers were collected for the past 12 months. Indirect costs associated with primary care- giver work absenteeism or reduced productivity due to ADHD were also collected. RESULTS: The mean number of ADHD children per caregiver was 1.3 (range 1–4); 60% were in sixth grade or lower. Mean number of visits over 12 months to pedi- atricians, psychiatrists, psychologists, and counselors for ADHD was 2.0, 3.8, 3.0, 6.8, respectively. In the past 3 months, 17% of the visits were emergency unscheduled visits. Parents accompanied their child on 92% of visits, overall. Sixty-three percent of caregivers reported some change in their work status as a result of their child’s ADHD. Of these caregivers, 15% changed job type, 47% reduced hours worked per week, and 11% stopped working completely. In the past 4 weeks, caregivers lost an average of 0.8 days from their primary responsibility and were 25% less productive on an average of 2.4 days due to their child’s ADHD. This would result in 39 days of reduced caregiver productivity per year. CONCLUSIONS: ADHD in children results in substan- tial impact on parents due to changes in work status, ab- senteeism, and productivity loss. Management of ADHD results in routine scheduled physician visits. Effective management of ADHD may minimize these costs to em- ployers and the healthcare system. TPIC3 THE PRODUCTIVITY COSTS OF ALLERGIC RHINITIS Crystal-Peters J, Crown B, Goetzel R The MEDSTAT Group, Inc., Washington, DC, USA Productivity losses associated with allergic rhinitis gener- ally are not a major concern of employers. However, there are a number of reasons why the productivity costs associated with allergic rhinitis may be substantial. OBJECTIVE: In this paper, we estimated absenteeism costs and reduced productivity associated with allergic rhinitis. METHODS: The National Health Interview Survey (NHIS) was used to obtain information on days lost from work and lost productivity, due to allergic rhinitis. Wage estimates for occupational categories, obtained from the Bureau of Labor Statistics (BLS), were used to calculate the economic costs.