Table 5 The relative risk (RR) estimates with 95% confidence interval (CI) of lung cancer incidence in the age–period–cohort model for both sexes in the period of 1987–2011 in Sihui

Age (years)

35–39

0.24 (0.14, 0.38)^a

0.42 (0.23, 0.73)^b

40–44

0.64 (0.44, 0.94)^a

0.45 (0.24, 0.80)^b

45–49

Reference

Reference

50–54

1.96 (1.43, 2.72)^b

1.30 (0.81, 2.11)

55–59

3.14 (2.21, 4.53)^a

2.37 (1.47, 3.90)^b

60–64

5.15 (3.47, 7.89)^a

2.77 (1.63, 4.84)^b

65–69

6.90 (4.34, 11.48)^a

3.71 (2.07, 6.88)^a

70–74

11.26 (6.63, 20.37)^a

5.53 (2.93, 10.94)^a

75–79

11.63 (6.32, 23.20)^a

5.55 (2.73, 11.98)^a

80–84

13.56 (6.61, 30.46)^a

7.29 (3.23, 17.59)^a

Period (year)

1987–1991

0.81 (0.61, 1.09)

0.79 (0.52, 1.18)

1992–1996

1.00 (0.81, 1.24)

1.35 (0.99, 1.83)

1997–2001

Reference

Reference

2002–2006

1.12 (0.92, 1.37)

1.18 (0.88, 1.58)

2007–2011

1.61 (1.25, 2.03)^a

2.19 (1.62, 2.96)^a

Cohort (year)

1910–1914

0.78 (0.45, 1.32)

1.13 (0.56, 2.28)

1915–1919

Reference

Reference

1920–1924

1.13 (0.80, 1.61)

1.16 (0.69, 1.99)

1925–1929

1.56 (1.12, 2.21)^b

1.92 (1.22, 3.09)^b

1930–1934

1.73 (1.20, 2.57)^b

2.19 (1.38, 3.61)^b

1935–1939

1.51 (0.98, 2.44)

2.33 (1.40, 4.05)^b

1940–1944

1.90 (1.15, 3.36)^b

1.87 (1.04, 3.55)^b

1945–1949

1.85 (1.04, 3.60)^b

1.90 (0.98, 3.92)

1950–1954

2.05 (1.08, 4.37)^b

2.57 (1.29, 5.62)^b

1955–1959

1.87 (0.90, 4.41)

2.07 (0.95, 5.00)

1960–1964

1.75 (0.76, 4.58)

1.32 (0.52, 3.68)

1965–1969

1.67 (0.66, 4.91)

3.36 (1.34, 9.71)^b