Epidemiology of colorectal cancer: comparison of Czech regions
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J. Mužík, L. Dušek, L. Šnajdrová
Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
Colorectal cancer (CRC) incidence rates are not uniform in individual regions of the Czech Republic. Between 2011 and 2015, CRC incidence rates ranged between 68 and 85 new cases per 100,000 population in most regions – with the exception of the Plzen Region, where CRC incidence rates reached up to 91.4 new cases per 100,000 population. The Plzen Region and the Karlovy Vary Region reported the highest CRC mortality rates among regions of the Czech Republic (Figure 1). A high burden of colorectal cancer in the Plzen Region has been recorded for more than 20 years, and thus the influence of statistical error or random fluctuation can be ruled out. Moreover, high incidence rates correspond to high mortality rates, which are independently checked using the records from the Czech Death Records Database. Reasons for these regional differences have not been satisfactorily explained yet, nevertheless they correspond to incidence rates of all cancers in individual regions. Table 1 shows the current epidemiology of colorectal cancer in Czech regions between 2011 and 2015.
Figure 1: Regional differences in colorectal cancer incidence and mortality rates in the period 2011–2015. Data source: CNCR |
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Table 1: Epidemiology of colorectal cancer in Czech regions in the period 2011–2015. Data source: CNCR
Region |
Annual incidence rate in the period 2011–2015 |
Annual mortality rate in the period 2011–2015 |
Mortality to incidence ratio |
Prevalence rate in 2015 |
Proportion of stages (%) |
|||||||
Absolute number |
Rate per 100.000 population |
Absolute number |
Rate per 100.000 population |
Absolute number |
Rate per 100.000 population |
I |
II |
III |
IV |
Unknown* |
||
PHA | 889 | 71.2 | 408 | 32.7 | 0.46 | 7,018 | 555.88 | 21.6 | 26.0 | 25.5 | 21.8 | 5.1 |
SCK | 879 | 67.8 | 471 | 36.3 | 0.54 | 6,660 | 504.27 | 22.8 | 26.6 | 27.0 | 16.6 | 6.9 |
JHC | 532 | 83.6 | 268 | 42.1 | 0.50 | 4,137 | 649.15 | 26.7 | 22.9 | 22.2 | 18.5 | 9.7 |
PLZ | 524 | 91.4 | 297 | 51.7 | 0.57 | 4,170 | 724.38 | 27.3 | 27.1 | 23.2 | 20.5 | 2.0 |
KVK | 256 | 85.0 | 139 | 46.0 | 0.54 | 1,931 | 646.89 | 24.7 | 27.1 | 24.7 | 21.1 | 2.4 |
UST | 639 | 77.4 | 320 | 38.7 | 0.50 | 4,689 | 569.48 | 22.3 | 25.5 | 24.5 | 20.7 | 7.0 |
LIB | 344 | 78.3 | 159 | 36.3 | 0.46 | 2,622 | 597.06 | 27.9 | 22.5 | 20.0 | 15.9 | 13.6 |
KHK | 437 | 79.1 | 210 | 37.9 | 0.48 | 3,329 | 603.88 | 23.4 | 21.2 | 26.8 | 20.8 | 7.7 |
PAR | 380 | 73.7 | 182 | 35.3 | 0.48 | 3,116 | 603.59 | 21.2 | 20.0 | 26.8 | 8.5 | 23.5 |
VYS | 398 | 78.0 | 169 | 33.1 | 0.42 | 3,326 | 652.79 | 24.5 | 21.6 | 25.7 | 18.8 | 9.4 |
JMK | 907 | 77.6 | 421 | 36.0 | 0.46 | 7,097 | 604.74 | 22.8 | 21.0 | 23.4 | 20.6 | 12.2 |
OLK | 518 | 81.3 | 260 | 40.9 | 0.50 | 4,205 | 662.11 | 25.6 | 25.1 | 23.9 | 14.1 | 11.2 |
ZLK | 478 | 81.4 | 218 | 37.1 | 0.46 | 3,917 | 669.77 | 24.8 | 21.6 | 24.1 | 16.7 | 12.9 |
MSK | 1,017 | 83.1 | 410 | 33.5 | 0.40 | 7,909 | 650.83 | 26.8 | 23.4 | 23.5 | 19.3 | 7.0 |
ČR | 8,198 | 78.0 | 3,933 | 37.4 | 0.48 | 64,126 | 608.24 | 24.3 | 23.8 | 24.4 | 18.5 | 8.9 |
* Proportion of CNCR records missing data on clinical stage for objective reasons (early deaths, unfinished diagnosis, treatment not initiated due to contraindications, patient's refusal to treatment) or incorrect records.
List of abbreviations (*)
- CNCR – Czech National Cancer Registry
- CR – Czech Republic
- HKK – Hradec Kralove Region
- JHC – South Bohemian Region
- JHM – South Moravian Region
- KVK – Karlovy Vary Region
- LBK – Liberec Region
- MSK – Moravian-Silesian Region
- OLK – Olomouc Region
- PAK – Pardubice Region
- PHA – Capital of Prague
- PLK – Plzen Region
- STC – Central Bohemian Region
- ULK – Usti nad Labem Region
- VYS – Vysocina Region
- ZLK – Zlin Region
Last updated on 25 May 2018