TABLE 1

Number (%) of incident patients with type 1 diabetes and control subjects in relation to age, sex, and geographic location

Control subjectsPatients
Total number of subjects702 (100)971 (100)
Age distribution (years)
 0–654 (7.7)131 (13.5)
 7–13310 (44.2)315 (32.4)
 14–20154 (21.9)217 (22.3)
 21–2774 (10.5)169 (17.4)
 28–34109 (15.5)136 (14.0)
 Missing1 (0.1)3 (0.3)
Sex distribution
 Female339 (48.3)399 (41.1)
 Male363 (51.7)572 (58.9)
Geographic distribution (north to south)
 Umeå102 (14.5)123 (12.7)
 Uppsala152 (21.7)197 (20.3)
 Stockholm105 (15.0)203 (20.9)
 Linköping118 (16.8)138 (14.2)
 Göteborg129 (18.4)186 (19.2)
 Lund96 (13.7)124 (12.8)
  • The distributions of age, sex, and geographic region differ between patients and control subjects, according to χ2 tests on 4 (P < 0.0001), 1 (P = 0.004), and 5 (P = 0.04) degrees of freedom, respectively.