Table 2.
2004 Annualized Health Care Costs and Utilization by Type of Service
| AD | Controls | Contribution of AD† | ||||||
| % of Cohort Using | Mean Visit Days | Mean Cost $ (CV)* | % of Cohort Using | Mean Visit Days | Mean Cost $ (CV)* | Visit Days† | Cost $ † | |
| Inpatient | 30 | 3.38 | 5,094 (419) | 20 | 1.93 | 4,014 (753) | 1.14‡ | 671‡ |
| Pharmacy | 94 | -- | 4,056 (77) | 85 | -- | 2,169 (174) | -- | 1,711‡ |
| Hospital outpatient | 61 | 2.61 | 1,252 (298) | 58 | 2.51 | 1,412 (384) | -0.30‡ | -366‡ |
| Physician office | 79 | 8.46 | 1,100 (237) | 81 | 9.97 | 1,508 (270) | -2.86‡ | -648‡ |
| Emergency room | 41 | 1.04 | 335 (280) | 27 | 0.64 | 196 (530) | 0.28‡ | 107‡ |
| Home health | 7 | 0.24 | 32 (1,001) | 4 | 0.15 | 27 (3,191) | 0.05‡ | 0.37 |
| Other | 56 | -- | 2,068 (353) | 37 | -- | 1,043 (571) | -- | 789‡ |
| Total Utilization | 97 | -- | 13,936 (181) | 91 | -- | 10,369 (324) | -- | 2,307‡ |
* CV = Coefficient of Variation = 100*SD/Mean
† Coefficient of the AD indicator from the weighted least square regression for annualized costs, or utilization within each setting controlling for overall illness burden (RRS excluding AD and RRS squared).
‡ Statistically significant effects attributed to AD at p < 0.05.