Table 1.

Risk for cervical cancer by numbers of partners with whom parents had children

Tumor typeMother 1, father 1
Mother >1, father 1
Mother 1, father >1
Mother >1, father >1
ObservedSIR (95% CI)ObservedSIR (95% CI)ObservedSIR (95% CI)ObservedSIR (95% CI)
Invasive4,1141.00 (0.97-1.03)3061.09 (0.97-1.22)4011.14 (1.03-1.26)2361.19 (1.05-1.36)
Invasive + in situ74,4371.00 (0.99-1.01)6,9321.24 (1.21-1.27)8,5931.21 (1.18-1.23)5,4671.29 (1.26-1.33)
  • NOTE: Boldfaced, 95% CI and 99% CI do not include 1.00.