Table 4.
Baseline descriptive characteristics of the sample by informant status.
| No informant | Yes informant | p | |
|---|---|---|---|
| Sample Size: #, % | 421, 38.4% | 676, 61.6% | |
| Age at baseline: M (SD) | 78.6 (5.3) | 78.5 (5.4) | 0.620 |
| Sex: #, % Female | 270, 64.1% | 414, 61.2% | 0.337 |
| Education: M (SD) | 13.6 (3.5) | 14.0 (3.5) | 0.140 |
| Race/Ethnicity: | |||
| #, % non-Hispanic White | 272, 64.6% | 503, 74.4% | 0.001 |
| #, % non-Hispanic Black | 149, 35.4% | 173, 25.6% | |
| GDS score+: M (SD) | 2.4 (2.6) | 2.1 (2.1) | 0.421 |
| Any self-reported SCC: % | 87.2% | 93.9% | 0.0001 |
| MCI status: #, % | |||
| Jak/Bondi with no SCC | 193, 45.8% | 229, 33.9% | <0.0001 |
| Jak/Bondi + any self-reported SCC | 159, 37.8% | 216, 32.0% | 0.048 |
| Jak/Bondi + high avg. self-reported SCC | 61, 14.5% | 101, 14.9% | 0.8376 |
| Petersen with no SCC | 249, 59.1% | 306, 45.3% | <0.0001 |
| Petersen + any self-reported SCC | 218, 51.8% | 276, 40.8% | 0.0004 |
| Petersen + high avg. self-reported SCC | 75, 17.8% | 134, 19.8% | 0.410 |
+
excluding the memory item from the short form of the GDS.