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Table 1 Study population characteristicsa, stratified on sex and subsequent cancer event

From: Healthcare utilisation in general practice and hospitals in the year preceding a diagnosis of cancer recurrence or second primary cancer: a population-based register study

 Women, n (%)Men, n (%)
Cancer recurrenceSecond primary cancerIn remissionCancer recurrenceSecond primary cancerIn remission
Total population5072(100)1811(100)34,415(100)2760(100)892(100)18,260(100)
Age groupsb
 18–49 years624(12.3)85(4.7)3545(10.3)179(6.5)10(1.1)945(5.2)
 50–64 years1556(30.7)461(25.5)10,085(29.3)728(26.4)144(16.1)4360(23.9)
 65–79 years2188(43.1)972(53.7)15,800(45.9)1509(54.7)569(63.8)10,390(56.9)
 80+ years704(13.9)293(16.2)4985(14.5)344(12.5)169(18.9)2565(14.0)
Comorbidityc
 No3045(60.0)1128(62.3)20,865(60.6)1292(46.8)509(57.1)9005(49.3)
 Low1103(21.7)466(25.7)7845(22.8)758(27.5)272(30.5)5150(28.2)
 High924(18.2)217(12.0)5705(16.6)710(25.7)111(12.4)4105(22.5)
Primary cancer
 Bladder103(2.0)19(1.0)610(1.8)281(10.2)72(8.1)1765(9.7)
 Malignant melanoma467(9.2)197(10.9)3320(9.6)637(23.1)309(34.6)4730(25.9)
 Lung400(7.9)64(3.5)2320(6.7)465(16.8)96(10.8)2805(15.4)
 Colorectal1001(19.7)286(15.8)6435(18.7)1377(49.9)415(46.5)8960(49.1)
 Ovarian/endometrial815(16.1)237(13.1)5260(15.3)      
 Breast2286(45.1)1008(55.7)16,470(47.9)      
Educational leveld
 Short2166(42.7)799(44.1)13,855(40.3)980(35.5)308(34.5)5966(32.7)
 Medium1961(38.7)704(38.9)13,603(39.5)1390(50.4)453(50.8)9472(51.9)
 Long945(18.6)308(17.0)6957(20.2)390(14.1)131(14.7)2822(15.5)
Marital statusd
 Cohabitating2773(54.7)1007(55.6)19,147(55.6)1931(70.0)646(72.4)12,864(70.4)
 Living alone2299(45.3)804(44.4)15,268(44.4)829(30.0)246(27.6)5396(29.6)
Months since primary cancere, median (IQRf)16
(7;34)
 32
(16;53)
 20
(9;40)
 11
(6;24)
 26
(13;45)
 14
(7;30)
 
  1. aAll patients diagnosed with a primary cancer between 2008 and 2016 and followed until 31 December 2016. Patients with cancer recurrence and second primary cancer were matched 1:5 with patients in complete cancer remission
  2. bAge at the time of cancer recurrence and second primary cancer, i.e. the index date
  3. cCharlson Comorbidity Index score calculated on the first day of analysis, devided into 0 (none), 1–2 (low), 3+ (high)
  4. dEducational level and marital status defined at the time of cancer recurrence and second primary cancer, i.e. the index date
  5. eTime from final primary cancer treatment to a diagnosis of cancer recurrence or second primary cancer and the corresponding event date assigned to patients in remission, reported as median and interquartile range
  6. fIQR: Interquartile range