Table 5 Cohort study of asbestos cement workers in Casale Monferrato, Italy: analysis of mortality using Poisson regression
A: Pleural neoplasmObsRR (95% CI)
Duration of exposure (years)
    <140.80 (0.25 to 2.53)
    1–4100.76 (0.34 to 1.73)
    5–9161.04 (0.53 to 2.01))
    10–19281 (ref) (–)
    20–29531.46 (0.86 to 2.45)
    30 +281.88 (0.93 to 3.83)
Latency (years)
    <1010.20 (0.02 to 1.64)
    10–1980.61 (0.26 to 1.44)
    20–29231 (ref) (–)
    30–39481.44 (0.81 to 2.56)
    40–49401.86 (0.90 to 3.84)
    50+191.19 (0.43 to 3.31)
Time since last exposure (years)
    <3130.67 (0.32 to 1.40)
    3–15551 (ref) (–)
    15–30550.90 (0.54 to 1.49)
    >30160.65 (0.26 to 1.63)
Age at first exposure and period of first exposure were not statistically significant and were not retained in the model.
B: Peritoneal neoplasmObsRR (95% CI)
Duration of exposure (years)
    <100 (–)
    1–410.15 (0.02 to 1.19)
    5–950.68 (0.23 to 1.98)
    10–19131 (ref) (–)
    20–29221.23 (0.62 to 2.46)
    30+151.22 (0.54 to 2.76)
Latency (years)
    <1010.72 (0.07 to 7.34)
    10–1900 (–)
    20–2951(ref) (–)
    30–39173.15 (1.09 to 9.12)
    40–49155.31 (1.62 to 17.49)
    50+1811.54 (2.80 to 47.64)
Time since last exposure, age at first exposure and period of first exposure were not statistically significant and were not retained in the model.
C: Lung cancerObsRR (95% CI)
Time since last exposure (years)
    <3210.38 (0.22 to 0.65)
    3–151251 (ref) (–)
    15–30890.70 (0.52 to 0.95)
    >30230.56 (0.35 to 0.92)
Latency (years)
    <1020.16 (0.04 to 0.69)
    10–19160.48 (0.27 to 0.85)
    20–29541 (ref). (–)
    30–391141.64 (1.17 to 2.31)
    40–49501.31 (0.86 to 2.00)
    50+221.06 (0.59 to 1.88)
Gender
    Female121 (ref). (–)
    Male2468.34 (4.63 to 15.11)
Age at first exposure and duration of exposure were not statistically significant and were not retained in the model.
  • All models are adjusted by age, gender and period of follow-up. Obs, observed.