Table 2.

Estimated linear regression coefficient (95% CI) with predictors of IIRC groups, St Jude's staging, and ISS by laterality

IIRC stagingSt. Jude's stagingISS
UnilateralBilateralUnilateralBilateralUnilateralBilateral
(N = 102)(N = 66)(N = 108)(N = 69)(N = 108)(N = 69)
B (95% CI)B (95% CI)B (95% CI)B (95% CI)B (95% CI)B (95% CI)
Lag time (months)a,b0.040 (−0.049 to 0.130)0.062 (−0.059 to 0.182)0.004 (−0.159 to 0.167)0.237c (0.089–0.384)0.038 (−0.170 to 0.247)0.330c (0.146–0.514)
Maternal education−0.023 (−0.054 to 0.008)−0.052c (−0.085 to −0.019)−0.093c (−0.152 to −0.033)−0.022 (−0.064 to 0.019)−0.100d (−0.176 to −0.024)−0.017 (−0.069 to 0.035)
Dirt floor during pregnancy0.168 (−0.137 to 0.473)0.426e (−0.042 to 0.894)0.912c (0.327–1.498)0.504e (−0.067 to 1.075)1.097c (0.348 to 1.846)0.879e (0.166–1.592)
Monthly household incomea0.247e (−0.037 to 0.531)0.137 (−0.226 to 0.501)
R20.0570.2300.2080.2140.1890.253
  • aNatural log transformed.

  • bSquare root transformed for bilateral retinoblastoma.

  • cP < 0.005.

  • dP < 0.01.

  • eP < 0.09.