Table 1 Annual profiles of corroborated AD patients, 2001-2005
Population annual characteristics | 2001 | 2002 | 2003 | 2004 | 2005 |
|---|---|---|---|---|---|
Number | 23,038 | 30,935 | 35,392 | 37,500 | 34,601 |
Observed AD prevalence1 | 1.6% | 2.1% | 2.3% | 2.4% | 2.2% |
Gender | |||||
Male | 28.9% | 28.9% | 29.3% | 29.5% | 29.2% |
Female | 71.2% | 71.1% | 70.7% | 70.5% | 70.8% |
Age in year (<1% in below 55 ages) | |||||
Age 55-64 | 1.1% | 1.1% | 1.2% | 1.2% | 1.2% |
Age 65-74 | 12.4% | 11.6% | 11.0% | 10.7% | 10.0% |
Age 75+ | 86.3% | 87.0% | 87.5% | 87.8% | 88.5% |
Mean age | 82.41 | 82.72 | 82.91 | 83.03 | 83.36 |
Race/ethnicity | |||||
White | 87.5% | 87.0% | 86.7% | 86.5% | 86.3% |
Black | 9.0% | 9.3% | 9.4% | 9.5% | 9.5% |
Other race/ethnicity | 3.5% | 3.7% | 3.9% | 4.1% | 4.2% |
Geographical region | |||||
Northeast | 20.2% | 20.2% | 19.9% | 19.8% | 19.6% |
Midwest | 26.0% | 25.2% | 25.1% | 24.8% | 24.8% |
South | 40.0% | 40.6% | 40.7% | 41.0% | 41.0% |
West | 12.0% | 12.2% | 12.4% | 12.7% | 12.9% |
Other | 1.9% | 1.8% | 1.8% | 1.8% | 1.7% |
Urban | 72.5% | 72.8% | 73.1% | 73.4% | 73.5% |
Rural | 24.8% | 24.5% | 24.1% | 23.7% | 23.6% |
Unknown | 2.7% | 2.7% | 2.8% | 2.9% | 2.9% |
Patient status | |||||
Nursing home at index2 | 39.5% | 31.8% | 26.6% | 22.5% | 20.3% |
Nursing home entry during follow-up2 | 11.2% | 13.4% | 12.1% | 11.3% | 10.9% |
Death during follow-up | 68.3% | 60.2% | 48.4% | 34.6% | 20.3% |
Mean follow-up months | 34.6 | 35.6 | 35.7 | 33.9 | 32.4 |
Identified spouses | |||||
Number | 2,581 | 3,234 | 3,606 | 3,717 | 3,184 |
Percent of total AD patients | 11.2% | 10.5% | 10.2% | 9.9% | 9.2% |
Incident AD diagnoses 3 | |||||
Number | N/A4 | 9,447 | 8,728 | 7,758 | 3,518 |
Percent of total AD patients | N/A4 | 30.5% | 24.7% | 20.7% | 10.2% |
Identified incident AD spouses | |||||
Number | N/A4 | 1,077 | 975 | 836 | 342 |
Percent of total AD patients | N/A4 | 3.50% | 2.80% | 2.20% | 1.00% |