Table 2

 Rates of first diagnosis of TA, age standardised incidence ratios, and age adjusted rates by year of diagnosis

Year of 1st diagnosisNo of casesIncidence rateSIR*Age adjusted incidence rate†/10 000 person-years (95% CI)Sex ratio (F:M)
*SIR  =  age standardised incidence ratio; †age adjusted incidence rate  =  overall incidence rate × SIR/100.
19901712.17982.15 (1.8 to 2.5)2.3
19913762.261012.23 (2.0 to 2.5)1.9
19924152.231002.21 (2.0 to 2.4)2.9
19934532.481112.45 (2.2 to 2.7)3.1
19943832.17982.15 (1.9 to 2.4)2.4
19953642.07942.06 (1.9 to 2.3)2.3
19963802.381082.39 (2.2 to 2.6)2.3
19973682.451122.47 (2.2 to 2.7)2.8
19983352.321062.3 4 (2.1 to 2.6)2.3
19992601.90871.93 (1.7 to 2.2)3.2
20002331.83841.86 (1.6 to 2.1)2.8
20011901.94891.97 (1.7 to 2.3)3.8
Total39282.201002.20 (2.1 to 2.3)2.6