Table 3.
TRENDS IN US LARYNX AGE-STANDARDIZED INCIDENCE RATES (2000 US STANDARD POPULATION) BY GENDER, AGE GROUP, AND STATE, 2002 TO 2012
| Period | APC (95% CI) | P Value Testing for 0% APC | P Value Testing for Interaction | |
|---|---|---|---|---|
| Overall | 2002-2012 | −1.85 (−2.28 to −1.42) | <.0001* | NA |
| Gender | ||||
| Male | 2002-2012 | −2.09 (−2.30 to −1.88) | <.0001* | .4532 |
| Female | 2002-2012 | −1.71 (−2.79 to −0.62) | .0064* | |
| Age | ||||
| 0-29 | 2002-2012 | 6.78 (−0.17 to 14.22) | .0549 | <.0001† |
| 30-39 | 2002-2012 | 0.15 (−5.49 to 6.13) | .9533 | |
| 40-49 | 2002-2012 | −3.82 (−4.79 to −2.85) | .0001* | |
| 50-59 | 2002-2012 | −2.16 (−2.81 to −7.53) | <.0001* | |
| ≥60 | 2002-2012 | −1.65 (−2.11 to −1.18) | <.0001* | |
| State | ||||
| California | 2002-2012 | −2.95 (−3.49 to −2.40) | <.0001* | <.0001† |
| Connecticut | 2002-2012 | −0.97 (−2.68 to 0.77) | .2380 | |
| Georgia | 2002-2012 | −2.04 (−3.01 to −1.05) | .0012* | |
| Hawaii | 2002-2012 | −0.63 (−3.03 to 1.83) | .5734 | |
| Iowa | 2002-2012 | −0.19 (−1.57 to 1.22) | .7711 | |
| Kentucky | 2002-2012 | 0.14 (−0.41 to 0.69) | .5719 | |
| Louisiana | 2002-2012 | −0.55 (−1.91 to 0.82) | .3846 | |
| Michigan | 2002-2012 | −1.40 (−3.07 to 0.29) | .0936 | |
| New Jersey | 2002-2012 | −2.83 (−3.92 to −1.74) | .0003* | |
| New Mexico | 2002-2012 | −3.92 (−6.92 to −0.83) | .0187* | |
| Utah | 2002-2012 | −0.85 (−5.10 to 3.60) | .6712 | |
| Washington | 2002-2005 | 16.71 (4.33−30.56) | .0220* | |
| 2005-2008 | −11.45 (−29.24 to 10.81) | .1829 | ||
| 2008-2012 | 1.19 (−5.74 to 8.62) | .6328 |
Abbreviations: APC, annual percentage change; CI, confidence interval; NA, not applicable.
*
APC is statistically different from 0% at an α value equal to 0.05.
†
APC is statistically different among categories of subgroup at an α value equal to 0.05.