From: The haplotypes of various TNF related genes associated with scleritis in Chinese Han
Clinical features | North of the Yangtze River | South of the Yangtze River | Total | |||
---|---|---|---|---|---|---|
N | % | N | % | N | % | |
Patients with scleritis | 291 | Â | 265 | Â | 556 | Â |
 Ethnicity | Han Chinese |  | Han Chinese |  | Han Chinese |  |
 Mean age ± SD | 39.1 ± 16.5 |  | 43.7 ± 15.4 |  | 41.3 ± 16.1 |  |
 Male | 126 | 43.3 | 103 | 38.9 | 229 | 41.2 |
 Female | 165 | 56.7 | 162 | 61.1 | 327 | 58.8 |
 Anterior scleritis | 179 | 61.5 | 197 | 74.3 | 376 | 67.6 |
 Posterior scleritis | 92 | 31.6 | 54 | 20.4 | 146 | 26.3 |
 Generalized scleritis | 20 | 6.9 | 14 | 5.3 | 34 | 6.1 |
 Systemic associated diseasesa | 32 | 11.0 | 24 | 9.1 | 59 | 10.6 |
  SLE | 1 | 0.3 | 1 | 0.4 | 2 | 0.4 |
  IPT | 1 | 0.3 | 1 | 0.4 | 2 | 0.4 |
  IBD | 1 | 0.3 | 1 | 0.4 | 2 | 0.4 |
  Psoriasis | 2 | 0.7 | 2 | 0.8 | 4 | 0.7 |
  GPA | 2 | 0.7 | 3 | 1.1 | 5 | 0.9 |
  Gout | 1 | 0.3 | 5 | 1.9 | 6 | 1.1 |
  RP | 4 | 1.4 | 2 | 0.8 | 6 | 1.1 |
  AS | 8 | 2.7 | 4 | 1.5 | 12 | 2.2 |
  RA | 13 | 4.5 | 7 | 2.6 | 20 | 3.6 |
Healthy controls 710 | 469 | Â | 273 | Â | 742 | Â |
 Ethnicity | Han Chinese |  | Han Chinese |  | Han Chinese |  |
 Mean age ± SD | 39.6 ± 10.2 |  | 40.4 ± 11.0 |  | 39.9 ± 10.5 |  |
 Male | 245 | 52.2 | 132 | 48.4 | 377 | 50.8 |
 Female | 224 | 47.8 | 141 | 51.6 | 365 | 49.2 |