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Table 2 Atrial fibrillation per 1000 patient years by sex and age categories at baseline with 95% confidence intervals estimated by using Poisson regression

From: Risk of atrial fibrillation in persons with type 2 diabetes and the excess risk in relation to glycaemic control and renal function: a Swedish cohort study

Atrial fibrillation, any positionAllMenWomen
Type 2 diabetesControlsType 2 diabetesControlsType 2 diabetesControls
All
 N421,8552,131,223233,5481,155,283188,307975,940
 n (%)37,590 (8.9%)149,231 (7.0%)21,808 (9.3%)86,178 (7.5%)15,782 (8.4%)63,053 (6.5%)
 Cases per 1000 years (95% CI)15.99 (15.83–16.15)11.89 (11.83–11.95)16.95 (16.73–17.18)12.66 (12.58–12.75)14.83 (14.60–15.07)10.97 (10.88–11.05)
 Unadjusted IRR (95% CI)1.35 (1.33–1.36) 1.34 (1.32–1.36) 1.35 (1.33–1.38) 
< 55 years
 N83,356424,66250,094255,24033,262169,422
 n (%)1569 (1.9%)4356 (1.0%)1175 (2.3%)3478 (1.4%)394 (1.2%)878 (0.5%)
 Cases per 1000 years (95% CI)3.18 (3.02–3.34)1.67 (1.62–1.72)3.96 (3.74–4.20)2.23 (2.15–2.30)1.99 (1.80–2.20)0.84 (0.79–0.90)
 Unadjusted IRR (95% CI)1.90 (1.79–2.01) 1.78 (1.67–1.90) 2.36 (2.10–2.66) 
55–64 years      
 N118,424606,29472,337371,48046,087234,814
 n (%)6819 (5.8%)22,332 (3.7%)4901 (6.8%)16,729 (4.5%)1918 (4.2%)5603 (2.4%)
 Cases per 1000 years (95% CI)9.50 (9.28–9.73)5.84 (5.77–5.92)11.30 (10.99–11.62)7.20 (7.09–7.31)6.75 (6.46–7.06)3.74 (3.64–3.84)
 Unadjusted IRR (95% CI)1.63 (1.58–1.67) 1.57 (1.52–1.62) 1.81 (1.71–1.90) 
65–74 years
 N122,848623,18467,666335,59055,182287,594
 n (%)12,973 (10.6%)50,919 (8.2%)8011 (11.8%)32,223 (9.6%)4962 (9.0%)18,696 (6.5%)
 Cases per 1000 years (95% CI)18.99 (18.67–19.32)13.75 (13.63–13.87)22.10 (21.62–22.59)16.54 (16.36–16.72)15.47 (15.05–15.91)10.65 (10.50–10.80)
 Unadjusted IRR (95% CI)1.38 (1.36–1.41) 1.34 (1.30–1.37) 1.45 (1.41–1.50) 
75 + years
 N97,227477,08343,451192,97353,776284,110
 n (%)16,229 (16.7%)71,624 (15.0%)7721 (17.8%)33,748 (17.5%)8508 (15.8%)37,876 (13.3%)
 Cases per 1000 years (95% CI)35.62 (35.08–36.17)29.54 (29.33–29.76)39.76 38.88–40.66)34.82 (34.45–35.20)32.54 (31.86–33.24)26.02 (25.76–26.29)
 Unadjusted IRR (95% CI)1.21 (1.19–1.23) 1.14 (1.11–1.17) 1.25
(1.22–1.28)