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Table 3 Trends of incidence and mortality of OPC in China, 2003–2012

From: Incidence, mortality, and temporal patterns of oropharyngeal cancer in China: a population-based study

Item PC (%) Trend 1# Trend 2#
APC (%) 95% CI (%) Period t P APC (%) 95% CI (%) Period t P
Incidence
 Total 27.0 6.2 0.5 to 12.3 2003–2006 2.802 0.038 0.7 − 1.2 to 2.6 2007–2012 0.937 0.392
 Urban areas 20.4 8.5 0.0 to 17.6 2003–2005 2.582 0.049 0.3 − 0.8 to 1.4 2006–2012 0.633 0.554
 Rural areas 61.1 6.0 3.8 to 8.2 2003–2012 6.333 < 0.001
 Males 30.7 2.5 1.5 to 3.5 2003–2012 5.951 < 0.001
 Females 17.7 5.5 − 0.9 to 12.3 2003–2007 2.181 0.081 − 1.6 − 5.9 to 2.9 2008–2012 − 0.932 0.394
Mortality
 Total 23.9 2.5 1.7 to 3.3 2003–2012 7.165 < 0.001
 Urban areas 22.3 2.3 1.4 to 3.1 2003–2012 6.037 < 0.001
 Rural areas 25.9 3.2 0.9 to 5.6 2003–2012 3.275 0.011
 Males 33.6 2.9 2.0 to 3.9 2003–2012 7.156 < 0.001
 Females − 3.6 0.8 − 1.1 to 2.7 2003–2012 0.945 0.372
  1. PC percentage change, APC annual percentage change, CI confidence interval
  2. #The program started with the minimum number of joinpoint (e.g., 0 joinpoint, which is a straight line) and tested whether more joinpoints are statistically significant and must be added to the model (up to that maximum number), enabling the user to test whether an apparent change in trend is statistically significant. The significance was tested using a Monte Carlo Permutation method. To reduce the possibility of reporting spurious changes in trends over the period, all models were restricted to a maximum of 2 joinpoints