Table 3

Distribution of deaths (and bladder cancer notification) and person-years at risk, 1955–96

Variable with levels Bladder cancer deaths3-150 Bladder cancer notifications (malignant)3-151 Bladder cancer notifications (malignant and benign)3-152 All deaths excluding bladder cancer3-153 Person-years at risk
Age:
 15–190001511.9
 20–2900023985.7
 30–3400053986.5
 35–3900095191.6
 40–44000156156.4
 45–49000286914.3
 50–54111527545.9
 55–590121037587.4
 60–640561506965.2
 65–6969112045585.8
 70–74107152423686.4
 75–792331871957.3
 80–84343111895.8
Calendar year3-154:
 1955–7011128927110.1
 1971–80561632515443.9
 1981–9212212239614636.7
 1993–96422993779.3
Year of starting employment:
 <19553-160 20263698744238.4
 1955–843-164 24512216731.5
Employment status:
 Still employed13620932165.8
 Left employment3-164 21273590028804.1
Period from first employment (y):
 0–90002911125.9
 10–1901214217234.3
 20–29441029315511.1
 ⩾3018252964517098.6
Cumulative exposure to MBT (mg.m-3.y):
 None14213195952646.4
 0.01–21.24455835449.3
 21.25–63.74333472081.8
 ⩾63.7511220792.4
Duration of employment in PBN department (y):
 None182535104458755.9
 1–4012381406.5
 ⩾544427807.6
Duration of employment in aniline department (y):
 None17233293851375.7
 1–41241015874.8
 ⩾5455703719.4
Duration of employment in o-toluidine department (y):
 None192737109559802.3
 1–42227884.4
 ⩾51127283.2
  • 3-150 Any part of death certificate coded to ICD-8 188.

  • 3-151 First notification of bladder cancer (ICD-8 188) from death certificate or from cancer registration particulars.

  • 3-152 First notification of bladder cancer (malignant, benign, in situ, uncertain behaviour or unspecified nature (ICD-8: 188.0-188.9, 223.3, 237.6; ICD-9: 188.0-188.9, 223.3, 233.7, 236.7, 239.4)) from death certificate or from cancer registration particulars.

  • 3-153 Bladder cancer as defined in3-150.

  • 3-154 Bladder cancer registrations (incident cancers) not available for first and last period.

  • 3-160 Survivor population (see text).

  • 3-164 Entry cohort (see text).

  • 3-161 Subjects enter the person-years for this category 3 months after leaving employment.