Table 2.
Social, health and physical inactivity correlates of CFS (univariate)a
| CFS correlate | Percentage (n/N), unweighted | OR (95% CI), weighted |
|---|---|---|
| Social support | ||
| Confiding/emotional support | ||
| Low | 3.1 (35/1,132) | 1 |
| Average | 2.3 (38/1,675) | 0.7 (0.4 to 1.3) |
| High | 2.4 (33/1,398) | 0.8 (0.5 to 1.5) |
| Practical support | ||
| Low | 1.9 (16/861) | 1 |
| Average | 2.1 (28/1,317) | 0.99 (0.5 to 2) |
| High | 3.1 (62/2,032) | 1.4 (0.7 to 2.7) |
| Negative aspects of support | ||
| Low | 0.6 (4/631) | 1 |
| Average | 2 (30/1,472) | 2.3 (0.7 to 7.6) |
| High | 3.4 (72/2,103) | 4 (1.2 to 12.4)b |
| Chronic strains | ||
| Tertiles of total score | ||
| Low | 0.9 (9/1,023) | 1 |
| Average | 2.2 (46/2,124) | 2.3 (1.04 to 5)b |
| High | 4.8 (53/1,100) | 4.9 (2.2 to 10.6)c |
| Perceived discrimination | ||
| Total score (means) | - | 1.5 (1.1 to 2)d |
| Mental health (CIS-R subscales) | ||
| Depression score | - | 2.2 (1.9 to 2.6)c |
| Anxiety score | - | 2.2 (1.9 to 2.6)c |
| Physical inactivity | ||
| Days of moderate activity of ≥30 minutes/day in past 4 weeksb | ||
| 5 or more (high) | 1.4 (16/1,126) | 1 |
| 1 to 4 (medium) | 1.3 (16/1,256) | 1.02 (0.4 to 2.3) |
| 1 or <1 (low) | 4 (75/1,883) | 3.3 (1.7 to 6.2) |
| Activity intensity | ||
| Moderate/vigorous | 1.7 (55/3,217) | 1 |
| Inactive/light | 5.7 (53/926) | 4.6 (2.9 to 7.2) |
aCFS, chronic fatigue syndrome; OR, odds ratio; 95% CI, 95% confidence interval; CIS-R, Revised Clinical Interview Schedule; bP ≤ 0.05; cP ≤ 0.001; dP ≤ 0.01.