Table 1. Socio-demographic and clinical characteristics of the sample and subjects with anxiety symptoms.
| Sample | Anxiety symptoms | Test Value, df, p * | ||||
| N = 366 | NO (N = 289) | YES (N = 77) | ||||
| Gender | Males | N (%) | 182 (49.7) | 154 (53.3) | 28 (36.4) | X 2 = 6.966, df = 1, p = 0.008 |
| Age, years | Mean (SD) | 83.7 (±6.2) | 84 (±6.4) | 82.4 (±5.4) | t = 1.939, df = 364, p = 0.053 | |
| Age, groups | ≤80 y | N (%) | 136 (37.1) | 104 (36.0) | 32 (41.5) | X 2 = 8.445, df = 3, p = 0.038 |
| 81–85 y | N (%) | 95 (26.0) | 74 (25.6) | 21 (27.3) | ||
| 86–90 y | N (%) | 66 (18.0) | 48 (16.6) | 18 (23.4) | ||
| ≥91 y | N (%) | 69 (18.9) | 63 (21.8) | 6 (7.8) | ||
| Educationα | <5 y | N (%) | 144 (39.3) | 115 (40.1) | 29 (37.7) | X 2 = 0.147, df = 1, p = 0.701 |
| ≥5 y | N (%) | 220 (60.7) | 172 (59.9) | 48 (62.3) | ||
| MMSE | Mean (SD) | 26.4 (±3.7) | 26.4 (±3.7) | 26.4 (±3.8) | t = 0.099, df = 364, p = 0.712 | |
| CAMCOG | Mean (SD) | 78.7(±15.4) | 78.6(±15.5) | 79.5(±14.9) | t = −0.482, df = 352, p = 0.125 | |
| Marital status β | Never married | N (%) | 22 (6.1) | 17 (5.9) | 5 (6.8) | X 2 = 1.648, df = 2, p = 0.439 |
| Married | N (%) | 178 (49.4) | 137 (47.9) | 41 (55.4) | ||
| No longer married | N (%) | 160 (44.5) | 132 (46.2) | 28 (37.8) | ||
| SESγ | Low | N (%) | 38 (10.5) | 25 (8.7) | 13 (16.9) | X 2 = 4.971, df = 2, p = 0.083 |
| Medium | N (%) | 319 (87.9) | 257 (89.9) | 62 (80.5) | ||
| High | N (%) | 6 (1.6) | 4 (1.4) | 2 (2.6) | ||
| Depressionδ | No | N (%) | 273 (74.8) | 238 (82.4) | 35 (46.0) | X 2 = 42.940, df = 2, p<0.001 |
| Mild | N (%) | 60 (16.4) | 35 (12.1) | 25 (32.9) | ||
| Moderate-Severe | N (%) | 32 (8.8) | 16 (5.5) | 16 (21.1) | ||
| Physical morbidityφ | None | N (%) | 63 (17.4) | 57 (19.8) | 6 (7.9) | X 2 = 6.150, df = 2, p = 0.052 |
| 1 | N (%) | 156 (43) | 119 (41.5) | 37 (48.7) | ||
| 2 | N (%) | 108 (29.7) | 86 (30.0) | 22 (28.9) | ||
| ≥3 | N (%) | 36 (9.9) | 25 (8.7) | 11 (14.5) | ||
| Alcohol, units/dayδ | <1 | N (%) | 150 (41.1) | 114 (39.6) | 36 (46.7) | X 2 = 8.021, df = 3, p = 0.046 |
| 1 | N (%) | 106 (29.0) | 93 (32.3) | 13 (16.9) | ||
| 2 | N (%) | 88 (24.1) | 67 (23.3) | 21 (27.3) | ||
| >2 | N (%) | 21 (5.8) | 14 (4.8) | 7 (9.1) | ||
*Comparison between persons with and without anxiety symptoms; X2 = Pearson Chi-square test, t = Student’s t test for independent samples, df = degree of freedom; MMSE (Mini Mental State Examination); CAM-Cog (Cambridge Cognitive Examination); SSE (Socio-economic status). Missing data αN = 2; βN = 6; γN = 3; δN = 1; φN = 3.