Table 1.
Patient Characteristics Overall and by Site
| Overall (n = 220) n (%) |
Site A (n = 109) n (%) |
Site B (n = 111) n (%) |
χ2 | p | |
| Diagnosis (n = 220) | |||||
| Probable AD | 139 (63.18) | 72 (66.06) | 67 (60.36) | ||
| Possible AD | 49 (22.27) | 14 (12.84) | 35 (31.53) | ||
| Mixed AD | 32 (14.55) | 23 (21.10) | 9 (8.11) | 15.29 | <0.001* |
| Patient Gender (n = 220) | |||||
| Female | 120 (54.55) | 51 (46.79) | 69 (62.16) | ||
| Male | 100 (45.45) | 58 (53.21) | 42 (37.84) | 5.24 | 0.022* |
| Caregiver Gender (n = 201) | |||||
| Female | 137 (68.16) | 71 (65.14) | 66 (71.74) | ||
| Male | 64 (31.84) | 38 (34.86) | 26 (28.26) | 1.00 | 0.317 |
| Caregivera (n = 218) | |||||
| Spouse or Spouse Equivalent | 118 (54.13) | 77 (70.64) | 41 (37.61) | ||
| Other Family Member/Relative | 91 (41.74) | 30 (27.52) | 61 (55.96) | ||
| Other | 9 (4.13) | 2 (1.83) | 7 (6.42) | <0.001* | |
| Marital Status (n = 214) | |||||
| Married | 144 (67.29) | 82 (78.10) | 62 (56.88) | ||
| Other | 70 (32.71) | 23 (21.90) | 47 (43.12) | 10.94 | 0.001* |
| Ethnicity (n = 220) | |||||
| Caucasian | 171 (77.73) | 83 (76.15) | 88 (79.28) | ||
| Non-Caucasian | 49 (22.27) | 26 (23.85) | 23 (20.72) | 0.31 | 0.577 |
| Mean (SD) | Mean (SD) | Mean (SD) | Zb | p | |
| Age (n = 220) | 79.04 (6.96) | 79.33 (7.14) | 78.76 (6.80) | 0.63 | 0.527 |
| Age at symptom onset (n = 216) | 72.74 (7.82) | 73.11 (8.29) | 72.36 (7.33) | −0.09 | 0.356 |
| Education, years (n = 220) | 13.90 (3.39) | 15.04 (2.95) | 12.78 (3.44) | 5.02 | <0.001* |
| MMSE (n = 203) | 19.99 (6.10) | 19.55 (6.23) | 20.41 (5.98) | −1.06 | 0.229 |
| BRDRS (n = 211) | 5.00 (3.57) | 5.30 (3.49) | 4.69 (3.65) | −1.63 | 0.103 |
| Comorbid Conditions (n = 214) | 3.02 (1.73) | 3.70 (1.70) | 2.37 (1.51) | 5.77 | <0.001* |
| Medication Count (n = 214) | 6.27 (3.72) | 6.58 (4.04) | 5.96 (3.38) | 0.87 | 0.382 |
SD, standard deviation; MMSE, Mini-Mental State Examination; BRDRS, Blessed Roth Dementia Rating Scale.
a
Fisher’s Exact Test
b
Wilcoxon Rank Sum Test
*
p < 0.05.