Table 2. Standardized incidence ratios (SIRs) according to age, gender and duration of generalized anxiety disorder.

	Total			Male			Female
Characteristics	Observed	Expected	SIR (95% CI)	Observed	Expected	SIR (95% CI)	Observed	Expected	SIR (95% CI)
All cancers	559	489.07	1.14(1.05–1.24)	274	210.65	1.30(1.15–1.46)	285	278.42	1.02(0.91–1.15)
Age, years
20–39	24	19.18	1.25(0.80–1.86)	10	5.91	1.69(0.81–3.11)	14	13.27	1.05(0.58–1.77)
40–59	167	163.89	1.02(0.87–1.19)	64	54.70	1.17(0.90–1.49)	103	109.18	0.94(0.77–1.14)
60–79	282	250.77	1.12(1.00–1.26)	149	121.96	1.22(1.03–1.43)	133	128.82	1.03(0.86–1.22)
≥80	86	55.23	1.56(1.25–1.92)	51	28.09	1.82(1.35–2.39)	35	27.14	1.29(0.90–1.79)
Duration
0–1	111	90.83	1.22(1.01–1.47)	53	39.07	1.36(1.02–1.77)	58	51.76	1.12(0.85–1.45)
≥1	448	398.25	1.12(1.02–1.23)	221	171.58	1.29(1.12–1.47)	227	226.66	1.00(0.88–1.14)
1–5	309	275.93	1.12(1.00–1.25)	154	118.78	1.30(1.10–1.52)	155	157.16	0.99(0.84–1.15)
≥5	139	122.31	1.14(0.96–1.34)	67	52.81	1.27(0.98–1.61)	72	69.51	1.04(0.81–1.30)

SIR Standardized incidence ratio; CI confidence interval.