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. Author manuscript; available in PMC: 2019 May 15.
Published in final edited form as: Cancer. 2018 Mar 13;124(10):2125–2133. doi: 10.1002/cncr.31322

Table One.

Incidence rate (IR)£ and incidence rate ratio (IRR) of oropharyngeal squamous cell cancer (OPSCC) and non-oropharyngeal head and neck squamous cell cancer per 100,000, by sex, age, and race from 1992–2014. Average APC (aAPC)¥ also shown.

All HNSCC OPSCC Non-oropharyngeal HNSCC

Incidence rate
per 100,000
(95% CI)
IRR aAPC
p-value
Incidence rate
per 100,000
(95% CI)
IRR aAPC,
p-value
Incidence rate
per 100,000
(95% CI)
IRR aAPC,
p-value

Overall 11.2 (11.1–11.3) −0.8, p<.001 3.4 (3.4–3.5) 1.2, p<.001 7.8 (7.7–7.8) −1.6, p<.001

Sex
  Women 5.5 (5.5–5.6) Reference −1.2, p<.001 1.4 (1.3–1.4) Reference −0.8, p=.002 4.1 (4.1–4.2) Reference −1.0, p=.003
  Men 17.9 (17.8–18.0) 3.2 −0.8, p<.001 5.8 (5.7–5.9) 4.2 1.7, p<.001 12.1 (12.0–12.2) 2.9 −2.0, p<.001

Age
 < 30 0.1(0.1–0.1) 0.0 0.04, p=.95 0.0 (0.0–0.0) 0.0 - 0.1 (0.1–0.1) 0.0 −0.1, p=.89
  30–39 1.5 (1.4–1.5) 0.1 −0.7, p=.02 0.3 (0.3–0.4) 0.0 −0.3, p=.70 1.1 (1.1–1.2) 0.1 −0.8, p=.02
  40–49 7.7 (7.6–7.9) 0.3 −1.0, p<.001 3.1 (3.0–3.1) 0.3 0.5, p=.17 4.7 (4.6–4.8) 0.3 −2.0. p<.001
  50–59 23.9 (23.6–24.2) Reference −0.6, p<.001 9.3 (9.1–9.5) Reference 2.0, p<.001 14.6 (14.3–14.8) Reference −2.0, p<.001
  60–69 41.5 (41.1–42.0) 1.7 −1.1, p<.001 13.4 (13.1–13.6) 1.4 1.5, p<.001 28.2 (27.8–28.6) 1.9 −2.4, p<.001
  70–79 47.0 (46.3–47.6) 2.0 −1.0, p<.001 11.4 (11.1–11.7) 1.2 1.4, p=.29 35.6 (35.0–36.1) 2.4 −1.9, p=.02
  ≥80 38.5 (37.8–39.2) 1.6 −0.02, p=.90 7.0 (6.7–7.3) 0.7 0.7, p=.10 31.5 (30.9–32.2) 2.2 −0.2, p=.12

Race/ethnicity
  White NH* 12.2 (12.1–12.3) Reference −0.2, p=.02 4.0 (3.9–4.0) Reference 2.0, p<.001 8.2 (8.2–8.3) Reference −1.4, p<.001
  Black NH 14.3 (14.0–14.5) 1.2 −2.8, p<.001 4.4(4.3–4.6) 1.1 −1.8, p<.001 9.8 (9.6–10.1) 1.2 −3.3, p<.001
  Hispanic 7.2 (7.0–7.4) 0.6 −0.9, p=.04 1.9 (1.8–2.0) 0.5 1.0, p=.13 5.3 (5.1–5.4) 0.6 −1.5, p<.001
  Asian NH 6.8 (6.6–6.9) 0.6 −1.3, p=.01 1.2 (1.2–1.3) 0.3 −0.3, p=.63 5.5 (5.4–5.7) 0.7 −1.1, p=.11
  AIAN NH 8.6 (7.9–9.3) 0.7 0.5, p=.24 2.4 (2.1–2.8) 0.6 - 6.2 (5.6–6.8) 0.7 -

Calendar Period
  1992–1999 12.2 (12.1–12.3) Reference −1.6, p<.001 3.1 (3.0–3.2) Reference −0.3, p=.55 9.1 (9.0–9.2) Reference −2.0, p<.001
  2000–2009 10.7 (10.6–10.8) 0.9, p<.001 −0.49, p=.24 3.4 (3.3–3.4) 1.1 p<.001 2.3, p<.001 7.4 (7.3–7.4) 0.8 p<.001 −1.7, p<.001
  2010–2014 10.8 (10.6–10.9) 0.9, p<.001 −0.1, p=.73 3.9 (3.8–4.0) 1.3 p<.001 2.6, p=.02 6.9 (6.8–7.0) 0.8 p<.001 −1.6, p=.009
*

Non-Hispanic

£

An incidence rate (IR) is the risk of a specified diagnosis, calculated as the number of new diagnoses per 100,000 people in the specific sex, age or race group who do not previously have this diagnosis) during the time period of interest. For example, an IR of 10 signifies for each 100,000 people without HNSCC, 10 were diagnosed with HNSCC during the time period of 1992–2014. The IR in this table were age-adjusted to the 2000 US Standard Population (19 age groups – Census P25-1130), providing a population-based estimate for the rate of diagnosis.

Incidence rate ratios (IRR) compare risk between variables. For example, IRR of 3.2 for men indicates that the incidence rate was 3.2 times higher among men than women during the time period.

¥

Average annual percent change (aAPC) provides an estimate of the change in the rate of diagnosis during that time period. A significant aAPC indicates an increase (>0) or decrease (<0) in incidence (risk) during the time period, while a non-significant aAPC indicates that incidence rates were stable during that time period.