through 1998. The ADRC collected data on the variables used in this analysis at entry and subsequent annual visits for as long as possible until the person with AD died or entered LTC. This design resulted in a variable number of data points per care recipient-caregiver dyad. The number of data points per dyad ranged from 1 to 10, with a mean of 2.5 per caregiver and 3.8 per care recipient. We used as many data points per person as were available to estimate rates of change for the independent variables except static demographic variables such as date of birth, gender, and race. During 1997 and 1998 the NEO Five Factor Inventory of personality (see below) was administered to as many of these caregivers as possible on a one-time basis. Of the sample of 332 caregivers, 58 had missing data on the personality instrument because they left the study before 1997 due to the death or LTC placement of the person with AD, 63 caregivers had missing data because they dropped out of the study prior to 1997, and 30 caregivers had missing data because they failed to return the NEO personality instrument, giving a total of 151 caregivers with missing NEO data. This left a sample of 181 caregivers with valid personality data. Although this sample is a subset of the samples used in two previous publications, (McClendon et al., 2006; McClendon et al., 2004) the personality data has not been previously used and has been introduced to clarify prior results. Measures of Alzheimer’s disease was based on NINCDS-ADRDA criteria (McKhann et al., Diagnosis 1984). For 37% of the deaths in the sample with valid personality data, the date was Date of death. determined as part of the ADRC’s procedures for arranging an autopsy following death. For
through 1998. The ADRC collected data on the variables used in this analysis at entry and subsequent annual visits for as long as possible until the person with AD died or entered LTC. This design resulted in a variable number of data points per care recipient-caregiver dyad. The number of data points per dyad ranged from 1 to 10, with a mean of 2.5 per caregiver and 3.8 per care recipient. We used as many data points per person as were available to estimate rates of change for the independent variables except static demographic variables such as date of birth, gender, and race. During 1997 and 1998 the NEO Five Factor Inventory of personality (see below) was administered to as many of these caregivers as possible on a one-time basis. Of the sample of 332 caregivers, 58 had missing data on the personality instrument because they left the study before 1997 due to the death or LTC placement of the person with AD, 63 caregivers had missing data because they dropped out of the study prior to 1997, and 30 caregivers had missing data because they failed to return the NEO personality instrument, giving a total of 151 caregivers with missing NEO data. This left a sample of 181 caregivers with valid personality data. Although this sample is a subset of the samples used in two previous publications, (McClendon et al., 2006; McClendon et al., 2004) the personality data has not been previously used and has been introduced to clarify prior results. Measures Diagnosis of Alzheimer’s disease was based on NINCDS-ADRDA criteria (McKhann et al., 1984). Date of death. For 37% of the deaths in the sample with valid personality data, the date was determined as part of the ADRC’s procedures for arranging an autopsy following death. For
CG%20Personality%20and%20Survival%20in%20AD,%2012-23-9.docx