Table 1.
Age at disease onset in the psoriatic arthritis (PsA) patient cohort.
| Normal Weight | Overweight | Obese | |||
|---|---|---|---|---|---|
| (n = 325) | (n = 299) | p | (n = 195) | p | |
| Age at first symptoms (mean (SD)) | 38.04 (14.33) | 41.35 (13.75) | 0.004 | 40.73 (12.17) | 0.031 |
| Missing | 7 (2.15) | 8 (2.68) | 4 (2.05) | ||
| Age at diagnosis (mean (SD)) | 41.81 (14.39) | 45.21 (13.09) | 0.002 | 45.00 (11.58) | 0.010 |
| Missing | 5 (1.54) | 5 (1.67) | 5 (2.56) |
Values are the number and column percentages, unless otherwise specified. The underweight, overweight, and obese categories were compared to the normal weight group using t-test. For the test, the missing values did not function as a grouping variable. Abbreviations: n—sample size; SD—standard deviation.