Baseline characteristics of study population
| Variable | RA group | Non-RA group | p Value* | |||
|---|---|---|---|---|---|---|
| The values for age, BMI, alcohol use, and radiation dose are the mean of each group. | ||||||
| *For the comparison between rheumatoid arthritis and non-rheumatoid arthritis individuals, adjustments were made for age and sex except for the comparison of female percentage and mean age. | ||||||
| BMI, body mass index; CHD, coronary heart disease; COPD, chronic obstructive lung disease; RA, rheumatoid arthritis. | ||||||
| No of individuals | 91 | 16 028 | ||||
| Percent female | 80.2 | 61.5 | <0.01 | |||
| Age (years) | 56.8 | 44.6 | <0.01 | |||
| BMI (kg/m2) | 21.3 | 21.2 | NS | |||
| Current smoking (%) | 16.7 | 36.5 | NS | |||
| Alcohol use (g/week) | 2.5 | 2.9 | NS | |||
| Radiation dose (Gy) | 0.36 | 0.37 | NS | |||
| Comorbid disease (%) | ||||||
| Hypertension | 29.7 | 27.5 | <0.01 | |||
| Diabetes | 6.6 | 7.3 | NS | |||
| CHD | 2.2 | 2.8 | NS | |||
| Stroke | 3.3 | 1.8 | NS | |||
| Anaemia | 34.1 | 20.3 | NS | |||
| Kidney disease | 4.4 | 1.2 | <0.05 | |||
| Liver disease | 2.2 | 2.3 | NS | |||
| COPD | 14.3 | 10.7 | NS | |||
| Cancer | 3.3 | 2.5 | NS | |||