TABLE 2

Incidence of Cancer Diagnosed at ≥ 60 d per 100 000 Person-Years by Use of Phototherapy in KPNC, Compared With California Statewide Rates

Total CasesTotal KPNC IRCA IRPhototherapyNo PhototherapyCrude IRR (95% CI)Pa
CasesIRCasesIR
Any cancer71117.617.76025.265117.51.4 (1.1–1.9).010
Any leukemia2235.56.52711.41965.32.1 (1.4–3.2).0007
Lymphocytic1694.25.1166.71534.11.6 (0.9–2.7).08
Nonlymphocytic leukemia541.31.4114.6431.24.0 (1.8–7.8).0004
 Myelocytic360.91.072.9290.83.7 (1.4–8.7).006
 Other nonlymphocytic leukemia180.40.441.7140.44.4 (1.1–14).02
Brain and nervous tissue1523.84.662.51463.90.6 (0.2– 1.4).28
Skin290.7N/A20.8270.71.2 (0.1–4.6).79
Kidney260.61.041.7220.62.8 (0.7–8.3).09
Bone130.30.520.8110.32.8 (0.3– 13).22
Liver120.30.431.390.25.2 (0.9– 21).04
All others2566.3N/A166.62406.61.0 (0.6, 1.7).86
  • CA, California; IR, incidence rate per 100 000 person-years; N/A, not applicable, because CDC Wonder does not include skin cancers.

  • a By exact, 2-tailed test.