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Table 1 Characteristics of population-based cohort of 11,571 patients first diagnosed as uterine cancer (ICD-9: 179, 182) in Taiwan 1979-2008

From: Increased risk of second primary malignancies following uterine cancer: a population-based study in Taiwan over a 30-year period

  All <50 years olda ≥50 years olda
No. with uterine cancer 11,571 4,445 (38.42 %) 7,126 (61.58 %)
No. who developed a SPM (%) 555 (4.80 %) 163 (3.67 %) 392 (5.50 %)
Average age at diagnosis of uterine cancer ± SD (years) 52.93 ± 11.69 41.63 ± 6.22 59.98 ± 8.26
Average age at diagnosis of SPM ± SD (years) 61.23 ± 11.78 48.59 ± 8.57 66.50 ± 8.49
Average interval between first and second cancers ± SD (years) 6.27 ± 5.53 6.61 ± 5.68 6.14 ± 5.47
Average follow-up (years) 6.05 ± 5.55 7.00 ± 5.84 5.46 ± 5.27
  1. SD standard deviation, SPM second primary malignancy
  2. aAge at uterine cancer diagnosis. An age of 50 years was selected for comparison as this is the average menopausal age in Taiwanese women