Table 2. Risk of death according to calendar period, time from and age at CLL diagnosis.

Calendar period	1978–1984	1985–1991	1992–1998	1999–2005	2006–2013
Time since diagnosis
<365 days	8.5 (7.8–9.3)	6.5 (5.9–7.1)	4.2 (3.7– 4.68)	3.4 (3.1–3.8)	2.6 (2.3–3.0)
1–4 years	3.6 (3.3–4.0)	3.1 (2.9–3.4)	2.3 (2.2–2.6)	2.3 (2.1–2.4)	1.9 (1.7–2.1)
5–10 years	3.7 (3.3–4.1)	3.0 (2.7–3.3)	2.5 (2.2–2.7)	2.3 (2.1–2.5)	1.9 (1.5–0.4)
10–15 years	3.1 (2.6–3.7)	2.3 (2.0–2.8)	2.2 (1.9–2.5)	1.9 (1.6–2.3)	NA
>15 years	1.7 (1.3–2.1)	1.9 (1.6–2.3)	2.0 (1.6–2.5)	NA	NA
Overall>365 days	3.4 (3.2–3.6)	2.8 (2.7–3.0)	2.3 (2.2–2.5)	2.3 (2.1–2.4)	1.9 (1.7–2.1)
Index	1.4 (1.3 –1.6)	1.2 (1.1–1.3)	Ref.	1.0 (0.9–1.0)	0.8 (0.7–0.9)
Age at diagnosis
⩽54	7.7 (6.3–9.3)	6.4 (5.3–7.8)	7.8 (6.4–9.4)	5.9 (4.6–7.4)	2.8 (1.2–6.3)
55–64	4.8 (4.3–5.5)	3.6 (3.2–4.1)	3.9 (3.4–4.3)	3.2 (2.8–3.8)	3.1 (2.4–4.0)
65–74	3.0 (2.7–3.3)	2.9 (2.7–3.2)	2.3 (2.1–2.6)	2.4 (2.2–2.7)	2.3 (2.0–2.8)
75–84	2.6 (2.3–2.9)	2.2 (2.0–2.5)	1.9 (1.7–2.0)	1.9 (1.7–2.1)	1.8 (1.5–2.0)
⩾85	2.4 (1.8–3.2)	1.9 (1.6–2.4)	1.7 (1.4–2.0)	1.6 (1.3–1.8)	1.3 (1.0–1.6)

Rate ratios of death for CLL patients compared with age, region of residence and gender matched background population by calendar period of diagnosis (1978–1984, 1985–1991, 1992–1998, 1999–2005 and 2006-–013), time since and age at diagnosis.

Abbreviation: NA, not applicable.