Table 2.
Differences in Demographic and Clinical Characteristics by Cluster Membership.
| Variable |
Intact (n = 53) |
Memory (n = 67) |
Globally Impaired (n =20) |
Omnibus Test Statistic (F or χ2) |
p |
|---|---|---|---|---|---|
| Age (years)a | 66.79(10.07) | 71.13(8.37) | 67.30(8.95) | 3.73 | .03 |
| Female (%)b,c | 33.96 | 29.85 | 60.00 | 6.21 | .05 |
| 3MSd | 95.91(3.28) | 91.88(4.64) | 84.85(5.60) | 48.04 | < .001 |
| Estimated IQd | 115.38(9.63) | 110.03(9.11) | 98.66(9.17) | 23.50 | < .001 |
| Education (years)e,f† | 14.16(2.90) | 13.09(2.63) | 12.10(1.37) | 5.12 | .01 |
| Systolic Blood Pressure (mmHg)†b,c | 116.64(16.48) | 117.08(14.72) | 126.70(19.64) | 3.17 | .05 |
| Diastolic Blood Pressure (mmHg) | 65.79(9.37) | 65.05(9.29) | 69.27(12.46) | 1.43 | .24 |
| Heart Rate | 64.26(11.59) | 65.27(10.46) | 67.27(15.30) | 0.49 | .62 |
| 2-Minute Step Teste,g | 64.57(20.00) | 63.36(26.72) | 40.85(18.22) | 8.44 | < .001 |
| Hypertension (%)b,c† | 64.15 | 76.12 | 95.00 | 7.46 | .02 |
| Myocardial Infarction (%) | 58.49 | 61.19 | 55.00 | 0.27 | .88 |
| Diabetes (%) | 33.96 | 31.34 | 55.00 | 3.87 | .15 |
| Sleep Apnea (%)b,c | 18.87 | 19.40 | 45.00 | 6.49 | .04 |
a
Memory > Intact;
b
Globally Impaired > Intact;
c
Globally Impaired > Memory;
d
Intact > Memory > Globally Impaired;
e
Intact > Memory;
f
Intact > Globally Impaired;
g
Memory > Globally Impaired;
†
indicates p < .10.