Table 1.
Descriptive statistics of extracted means from study groups included in the review. Study groups derived from 114 studies (330 study groups) of the general population and 71 studies (102 study groups) of the rheumatoid arthritis (RA) population.
| General population |
RA population |
|||
|---|---|---|---|---|
| N | Median (IQR) | N | Median (IQR) | |
| Total number subjects | 90,520 | 10,529 | ||
| Number of subjects per study group | 50.5 (19–189) | 47 (20–100) | ||
| Age (years) | 330 | 65.0 (50.5–72.7) | 102 | 55.1 (50.0–57.5) |
| Age SD per study group (years) | 169 | 5.2 (3.0–7.8) | 73 | 12.0 (10.0–13.0) |
| Gender (% females) | 330 | 54.6 (0–1) | 102 | 77.1 (69.0–87.0) |
| Disease duration (years) | – | – | 88 | 7.8 (2.6–12.5) |
| Anthropomorphic measurements | ||||
| Height (cm) | 150 | 163.3 (158.0–172.5) | 14 | 165.5 (164.0–169.0) |
| Weight (kg) | 153 | 66.7 (58.1–76.4) | 14 | 70.8 (67.5–74.0) |
| BMI (kg/m2) | 195 | 25.0 (23.0–26.6) | 15 | 26.0 (25.2–27.4) |
| Clinical measurements | ||||
| Pain, VAS 0–100 | 3 | 2 (0–11.5) | 51 | 45.2 (32.0–54.0) |
| HAQ, 0–3 | 3 | 0.05 (0–0.07) | 40 | 1.18 (0.88–1.34) |
| Inflammatory markers | ||||
| CRP (mg/L) | 8 | 2.98 (1.0–6.7) | 31 | 22.0 (11.5–32.0) |
| ESR (mm/h) | 1 | 8.8 (–) | 51 | 34.0 (25.0–47.6) |
Data are presented as medians with 25th and 75th percentiles (i.e., interquartile ranges [IQR])
N: number of study group with available data. Study groups are defined as whole study groups or sub-study groups based on gender, age categories or study specific sub-grouping.
BMI: body mass index, VAS: visual analogue scale, HAQ: health assessment questionnaire.
CRP: C-reactive protein, ESR: erythrocyte sedimentation rate.