Table 1.
Sample Characteristics According to Number of Neuropsychiatric Symptoms
| Characteristic | n (%) | P-Value* | |||
|---|---|---|---|---|---|
| Total | 0 | 1 or 2 | ≥3 | ||
| Sample (weighted %†) | 840 (100.0) | 518 (70.6) | 202 (20.3) | 120 (9.1) | |
| Age | .29 | ||||
| 71–79 | 349 (58.9) | 243 (61.4) | 73 (53.8) | 33 (51.1) | |
| 80–89 | 360 (34.0) | 203 (32.3) | 90 (38.6) | 67 (36.9) | |
| 90– | 131 (7.1) | 72 (7.3) | 39 (7.6) | 20 (12.0) | |
| Sex | .003 | ||||
| Female | 492 (60.6) | 296 (61.0) | 113 (51.4) | 83 (78.5) | |
| Male | 348 (39.4) | 222 (39.0) | 89 (48.6) | 37 (21.5) | |
| Race | .05 | ||||
| White | 650 (89.7) | 394 (88.9) | 163 (93.5) | 93 (87.5) | |
| Black | 157 (7.3) | 104 (8.2) | 31 (5.5) | 22 (4.9) | |
| Other | 33 (3.0) | 20 (2.9) | 8 (1.0) | 5 (7.6) | |
| Education, years | .03 | ||||
| <12 | 430 (33.4) | 249 (31.3) | 111 (40.1) | 70 (34.9) | |
| 12 | 195 (29.2) | 110 (27.2) | 59 (37.2) | 26 (26.8) | |
| > 12 | 215 (37.4) | 159 (41.5) | 32 (22.7) | 24 (38.3) | |
| Household net worth quartile | <.001 | ||||
| 1 | 331 (25.2) | 172 (19.5) | 90 (31.3) | 69 (55.7) | |
| 2 | 193 (22.0) | 128 (22.3) | 43 (23.8) | 22 (15.9) | |
| 3 | 159 (24.6) | 110 (27.3) | 32 (18.3) | 17 (17.5) | |
| 4 | 156 (28.2) | 107 (30.9) | 37 (26.6) | 12 (10.9) | |
| Cognitive category | <.001 | ||||
| Normal cognition | 303 (64.0) | 258 (74.5) | 37 (42.6) | 8 (30.7) | |
| Cognitive impairment, no dementia | 238 (22.2) | 151 (17.4) | 64 (36.2) | 23 (27.9) | |
| Mild dementia | 153 (7.6) | 71 (5.8) | 48 (11.5) | 34 (12.9) | |
| Moderate dementia | 64 (2.5) | 17 (0.8) | 23 (3.7) | 24 (12.3) | |
| Severe dementia | 82 (3.7) | 21 (1.5) | 30 (6.0) | 31 (16.2) | |
| Living situation | <.001 | ||||
| Alone | 270 (35.2) | 181 (36.8) | 53 (26.6) | 36 (42.1) | |
| With other | 150 (12.8) | 79 (11.2) | 46 (18.9) | 25 (11.3) | |
| With spouse or partner | 335 (46.9) | 223 (49.4) | 77 (46.5) | 35 (28.3) | |
| Nursing home | 85 (5.1) | 35 (2.6) | 26 (8.0) | 24 (18.3) | |
| Chronic medical condition | |||||
| Hypertension | 494 (60.0) | 301 (59.0) | 115 (59.6) | 78 (68.9) | .34 |
| Diabetes mellitus | 172 (19.8) | 95 (16.3) | 55 (33.3) | 22 (17.7) | .004 |
| Cancer | 161 (19.3) | 101 (19.3) | 40 (19.3) | 20 (19.4) | >.99 |
| Lung disease | 79 (8.5) | 43 (6.5) | 26 (14.4) | 10 (10.5) | .06 |
| Heart disease | 279 (30.1) | 158 (24.7) | 83 (41.0) | 56 (46.8) | <.001 |
| Stroke | 180 (15.5) | 87 (13.6) | 52 (16.1) | 41 (29.2) | .005 |
| Psychiatric illnesses | 170 (16.1) | 64 (9.9) | 56 (24.9) | 50 (44.0) | <.001 |
| Arthritis | 592 (70.6) | 354 (68.5) | 146 (72.6) | 92 (82.5) | .15 |
*
P-values were derived from the chi-square test for association between the indicated variable and the number of neuropsychiatric symptoms.
†
Percentages are weighted percentages derived using the Aging, Demographics, and Memory Study (ADAMS) sample weights to adjust for the complex sampling design of the ADAMS.