Table 1. Differences in Baseline Demographic Characteristics Among the Four Latent Classes and Between Resilient and Subsyndromal Classes.
| Characteristic | Resilient (1) n=142 (56.3%) | Subsyndromal (2) n=82 (32.5%) | Delayed (3) n=13 (5.2%) | Peak (4) n=15 (6.0%) | Omnibus (4-group) Test Statistic and Post hoc Comparisons* | p-value for Resilient vs. Subsyndromal |
|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||
| Age (years) | 64.7 (9.9) | 58.8 (10.9) | 53.0 (14.4) | 52.8 (12.3) | F(3,248)=12.13; p<0.0001; 1>2, 3, 4 | <0.001 |
| Education (years) | 16.1 (3.2) | 15.7 (2.9) | 15.6 (2.0) | 15.8 (2.9) | F(3,248)=0.33; p=0.801 | .39 |
| # Comorbid conditions | 4.3 (2.7) | 4.9 (2.9) | 4.8 (2.8) | 5.1 (2.2) | F(3,248)=1.10; p=0.35 | .11 |
| Weight (pounds) | 178.9 (37.6) | 171.7 (38.0) | 163.5 (44.9) | 171.8 (49.0) | F(3,245)=1.08; p=0.357 | .17 |
| KPS Score | 94.9 (9.2) | 87.5 (12.8) | 90.0 (16.0) | 89.3 (12.7) | F(3,242)=8.13; p<0.0001; 1>2 | <0.001 |
| n (%) | n (%) | n (%) | n (%) | |||
| Gender (% female) | 63 (44.4) | 50 (61.0) | 9 (69.2) | 13 (86.7) | χ2=14.53; p=0.002; 1<4 | .017 |
| Ethnicity (%) | ||||||
| White | 115 (81.0) | 52 (63.4) | 11 (84.6) | 10 (66.7) | χ2=9.66; p=0.028 | .011 |
| Asian/Pacific Islander | 4 (2.8) | 10 (12.2) | 0 (0.0) | 2 (13.3) | ||
| Black | 17 (12.1) | 14 (17.1) | 0 (0.0) | 3 (20.0) | ||
| Hispanic/Mixed/Other | 6 (4.3) | 6 (7.3) | 2 (15.4) | 0 (0.0) | ||
| Lives Alone (% yes) | 24 (25.8) | 23 (42.6) | 4 (40.0) | 3 (30.0) | χ2=4.70; p=0.195 | .035 |
| Married/partnered (% yes) | 108 (76.1) | 50 (62.5) | 8 (61.5) | 8 (53.3) | χ2=6.98; p=0.073 | .032 |
| Children at home (% yes) | 18 (14.9) | 9 (13.6) | 1 (9.1) | 7 (53.8) | χ2=14.16; p=0.003 1 and 2<4 | .82 |
| Older adult at home (% yes) | 2 (1.6) | 3 (4.5) | 1 (9.1) | 1 (7.7) | χ2=3.30; p=0.35 | .25 |
| Work for pay (% yes) | 67 (48.2) | 38 (46.9) | 3 (25.0) | 7 (46.7) | χ2=2.40; p=0.49 | .85 |
| Patient/FC (% Patient) | 93 (65.5) | 54 (65.9) | 10 (76.9) | 10 (66.7) | χ2=.71; p=0.872 | .96 |
Abbreviations: FC = family caregiver, KPS = Karnofsky Performance Status
*
Bonferroni post hoc pairwise comparisons with alpha = .05: Numbers refer to latent classes, e.g., for Age: 1>2,3,4 represents Resilient class had a higher mean age than the Subsyndromal, Delayed, or Peak classes. Only significant post hoc contrasts are shown.