No Down Syndrome | Down Syndrome | |||
---|---|---|---|---|

All cancer | 1.2 | (−89, +91) | 26 | (−1959, +2011) |

All leukemia | 27 | (−22, +76) | 1547 | (−1269, +4364) |

Lymphocytic | 15 | (−21, +51) | 503 | (−820, +1826) |

Nonlymphocytic | 13 | (−16, +42) | 1654 | (−1102, +4410) |

Whole Population | ||||

Kidney | 10 | (−11, +31) | ||

Bone | −2 | (−12, +7) | ||

Liver | 0 | (−18, +18) |

To obtain the number needed to harm (NNH), divide positive numbers shown into 100 000. For example, for all leukemia among infants without Down syndrome, the point estimate for the number of children who would need to be exposed to phototherapy to cause 1 case of leukemia over 10 y (if the association is causal) would be 100 000/27 = 3704, whereas for children with Down syndrome it would be 100 000/1547 = 65.