TABLE 2

Incidence of Cancer by Whether Infants Received Phototherapy, by Cancer Site

Phototherapy (n = 178 017)No Phototherapy (n = 4 966 832)Unadjusted Risk Difference (per 100 000)95% CI (per 100 000)Pa
NbIncidence (per 100 000)NbIncidence (per 100 000)
All cancer5832.6104221.011.63.6 to 20.7.002
Leukemia169.02424.94.10.1 to 9.2.025
Lymphoid leukemia63.41332.70.7−1.7 to 4.2.49
Myeloid leukemia105.61032.13.50.4 to 7.8.006
Brain or nervous system cancer73.91763.50.4−2.2 to 4.1.69
Eye or orbit cancer42.31032.10.2−1.8 to 3.2.79
Kidney cancer84.5821.72.80.1 to 6.7.013
Liver cancer21.1811.6−0.5−1.9 to 2.01.0
Soft tissue cancer10.6691.4−0.8−1.9 to 1.3.52
Other cancer2614.64268.66.00.8 to 12.4.013
  • a Fisher’s exact test used.

  • b Some subjects had >1 type of cancer.