Table 1.
Yearly incidence of SGC in Shanghai from 2003 to 2012
| Year | Number of cases | CR (1/1000000) | Z-testa | P-value | ASR (1/1000000) | Weighted X2-testa | P-value |
|---|---|---|---|---|---|---|---|
| 2003 | 173 | 12.95 | 3.37 | 0.001 | 8.41 | 0.85 | 0.409 |
| 2004 | 169 | 12.56 | 8.61 | ||||
| 2005 | 187 | 13.80 | 8.73 | ||||
| 2006 | 155 | 11.37 | 7.18 | ||||
| 2007 | 158 | 11.51 | 6.93 | ||||
| 2008 | 187 | 13.51 | 7.96 | ||||
| 2009 | 177 | 12.69 | 7.42 | ||||
| 2010 | 227 | 16.07 | 9.18 | ||||
| 2011 | 207 | 14.59 | 8.13 | ||||
| 2012 | 191 | 13.43 | 7.89 |
The incidence rates are expressed per 1,000,000 person year
SGC salivary gland cancer, CR crude rate, ASR age-standardized rate
aComparison of the incidence rates of the first 5 years (2003–2007) and next 5 years (2008–2012)