New cases, ASR of incidence rate and its EAPC
New EC cases in the US increased from 11391.02 in the year 1990 to 20690.21 in 2017. Although the EC ASR of incidence in 2017 (3.85 per 100,000) was higher compared with 1990 (3.61 per 100,000), there was no rising or down trend from 1990 to 2017 (EAPC was not statistically significant). In both 1990 and 2017, there was an over four-fold male population contribution over the female contribution to the EC incidence (Table 1). However, between 1990 and 2017, the ASR of EC incidence in males remained constant, whereas it decreased in females with an estimated annual percentage change of -0.444% (Table 1).
Table 1
New cases and age-standardized incidence rate of esophageal cancer in 1990 and 2017, and temporal trends from 1990 to 2017.
Category
|
New cases. ×1000 (95% UI)
|
ASR per 100,000 (95% UI)
|
EAPC % (95% CI)
|
1990
|
2017
|
1990
|
2017
|
1990–2017
|
Overall
|
11391.02
(11247.59,11556,12)
|
20690.21
(20040.79, 21331.42)
|
3.61(3.56, 3.66)
|
3.85(3.73, 3.97)
|
0.007
(-0.186, 0.200)
|
Sex
|
|
|
|
|
|
Male
|
8604.47
(8467.84, 8771.37)
|
16415.49
(15778.08, 17032.67)
|
6.28(6.18, 6.39)
|
6.64(6.38, 6.90)
|
-0.006
(-0.197, 0.186)
|
Female
|
2786.55
(2731.80, 2843.72)
|
4274.72
(4087.10, 4452.67)
|
1.50(1.47, 1.53)
|
1.45(1.39, 1.51)
|
-0.444
(-0.667, -0.220)
|
ASR, age-standardized rate; CI, confidence interval; EAPC, estimated annual percentage change; UI, uncertainty interval. |
At the state level, between 1990 and 2017, the highest increase of new EC cases was recorded in Nevada (262.32%), followed by Alaska (246.51%), and Utah (208.88%). In contrast, the lowest increase of new cases was observed in New York (30.83%), followed by New Jersey (39.02%), and Michigan (49.40%). The emergence of new cases decreased by -24.84% in the District of Columbia (Fig. 1A). The highest ASR of incidence in 2017 was recorded in South Dakota (5.93 per 100,000), followed by Colorado (5.40 per 100,000), and Virginia (5.17 per 100,000). On the contrary, the lowest ASR of incidence in 2017 was recorded in Oklahoma (2.88 per 100,000), followed by Montana (3.03 per 100,000), and then Kentucky (3.15 per 100,000) (Fig. 1B).
Between 1990 and 2017, the highest increase in ASR of incidence was recorded in Oklahoma (EAPC = 1.301%), followed by West Virginia (EAPC = 1.187%), and then Arkansas (EAPC = 0.999%). However, the highest decrease was observed in the District of Columbia (EAPC = -2.112%), followed by Maryland (EAPC = -0.900%), and California (EAPC=-0.786%). At the same time, six states recorded a constant ASR of incidence (Fig. 1C). There was no marked correlation between ASR of incidence and PCDPI in 2017 (Fig. 1D). Nevertheless, a significant negative correlation was recorded between EAPC of incidence and PCDPI in 1990 (Fig. 1E).
Deaths, ASR of mortality rate and its EAPC
Deaths from EC in the US increased from 11143.45 in 1990 to 18814.92 in 2017. Nonetheless, in the same period, the ASR of mortality decreased from 3.48 per 100,000 to 3.46 per 100,000, with an average − 0.237% per year change. In both 1990 and 2017, male-fatalities accounted for the majority of the recorded deaths, with a about quintuple higher ASR of mortality over females. However, the ASR of mortality decreased in both males and females, with an EAPC of -0.214% and − 0.957%, respectively. Smoking was the leading risk factor (with the highest deaths and ASR of mortality) in EC mortality in 2017, followed by high BMI, alcohol consumption, low-fruit diet, and chewing tobacco. Nonetheless, the fastest-growing risk factor was high BMI (EAPC = 0.777%), followed by low-fruit diet (EAPC = 0.547%). Besides, risk factor contribution by alcohol consumption remained constant, whereas smoking (EAPC = -1.613%) and chewing tobacco (EAPC=-0.481%) decreased over time (Table 2).
Table 2
Deaths and age-standardized mortality rate of esophageal cancer in 1990 and 2017, and its temporal trends from 1990 to 2017.
Category
|
No. ×1000 (95% UI)
|
ASR per 100,000 (95% UI)
|
EAPC % (95% CI)
|
1990
|
2017
|
1990
|
2017
|
1990–2017
|
Overall
|
9285.18
(9876.15, 8602.70)
|
15097.64
(16663.54, 13248.09)
|
2.91
(3.09, 2.70)
|
2.78
(2.44, 3.07)
|
-0.347
(-0.493, -0.200)
|
Sex
|
|
|
|
|
|
Male
|
7281.27
(7730.07, 6754.50)
|
12586.16
(13927.15, 10928.60)
|
5.30
(5.63, 4.91)
|
5.07
(4.40, 5.61)
|
-0.340
(-0.492, -0.188)
|
Female
|
2003.91
(2301.55, 1682.34)
|
2511.48
(3020.14, 1960.36)
|
1.06
(1.21, 0.89)
|
0.83
(0.65, 0.99)
|
-1.116
(-1.267, -0.965)
|
Risk factors
|
|
|
|
|
|
Smoking
|
6420.32
(5740.24, 7024.07)
|
7493.44
(6521.15, 8504.44)
|
2.00
(1.80, 2.18)
|
1.37
(1.19, 1.55)
|
-1.613
(-1.825, -1.400)
|
Alcohol use
|
3827.03
(2730.28, 4847.96)
|
6784.80
(4582.50, 8831.67)
|
1.23
(0.89, 1.55)
|
1.27
(0.86, 1.64)
|
0.055
(-0.094, 0.205)
|
High body-mass index
|
3153.58
(1062.05, 5545.67)
|
6981.15
(2429.76, 11398.00)
|
1.00
(0.34, 1.75)
|
1.29
(0.45, 2.11)
|
0.777
(0.560, 0.993)
|
Diet low in fruits
|
1507.13
(308.28, 2994.30)
|
2920.67
(615.42, 5594.33)
|
0.47
(0.10, 0.94)
|
0.54
(0.11, 1.03)
|
0.547
(0.470, 0.624)
|
Chewing tobacco
|
554.49
(321.24, 807.54)
|
879.89
(465.46, 1362.45)
|
0.17
(0.10, 0.25)
|
0.16
(0.09, 0.25)
|
-0.481
(-0.557, -0.405)
|
ASR, age-standardized rate; CI, confidence interval; EAPC, estimated annual percentage change; UI, uncertainty interval. |
We recorded the highest increase in deaths in Nevada (242.96%), followed by Alaska (226.09%), and Arizona (177.66%) and the lowest in New York (16.76%), followed by New Jersey (24.48%), and Illinois (37.22%). A decrease in fatalities was only recorded in the District of Columbia (-30.98%) (Fig. 2A). In 2017, the District of Columbia (5.48 per 100,000) had the highest ASRs of mortality, followed by Maine (4.80 per 100,000), and New Hampshire (4.46 per 100,000), whereas Utah (2.52 per 100,000) had the lowest, followed by Hawaii (2.61 per 100,000), and California (2.70 per 100,000) (Fig. 2B). Between 1990 and 2017, we recorded the highest ASR of mortality in the District of Columbia. Furthermore, the District of Colombia had the most rapid decrease in the ASR of mortality (EAPC = -2.428%), followed by Maryland (EAPC = -1.235%), and New Jersey (EAPC = -0.947%). On the contrary, the fastest-growing ASR of mortality was observed in Oklahoma (EAPC = 1.175%), followed by West Virginia (EAPC = 1.015%), and Arkansas (EAPC = 0.827%). Twelve states had a constant ASR of mortality (Fig. 2C). Moreover, a strong correlation was observed between PCDPI and EAPC of mortality, which was not evident in the ASR of mortality (Fig. 2D, E).
In 2017, the highest contribution of 4 risk factors (smoking, 2.33 per 100,000; alcohol use, 2.12 per 100,000; high BMI, 2.16 per 100,000; and low-fruit diet, 0.75 per 100,000) to the ASR of mortality was recorded in the District of Columbia. The highest contribution of tobacco chewing to the ASR of mortality was recorded in West Virginia (0.66 per 100,000) (Fig. 3A). The highest increase in ASR of mortality resulting from alcohol use, high BMI, and low-fruit diet were recorded in Oklahoma with an EAPC of 1.495%, 2.612%, and 2.229%, respectively. The highest increase in ASR of mortality resulting from chewing tobacco was recorded in Arkansas with an EAPC of 1.535%. The rapidest decrease in EC ASR of mortality resulting from smoking, alcohol use, high BMI or chewing tobacco were observed in the District of Columbia with an EAPC of -3.815%, -2.365%, -1.892% and − 2.171, respectively. In California, the rapidest decrease in EC ASR of mortality resulting from low-fruit diet was recorded with an EAPC of -0.906%. Overall, the ASR of EC mortality attributed to smoking declined in all the US states except Oklahoma (with no significant EAPC change). In contrast, the ASR of mortality attributed to high BMI and low-fruit diet increased in a significant number of the states (Fig. 3B). Besides, PCDPI was negatively correlated with ASR of mortality attributed to smoking, low-fruit diet, and chewing tobacco (Fig. 3C-G) similar to the EAPC of mortality attributed to all investigated risk factors except tobacco chewing (Fig. 3H-L).
DALYs, ASR of DALYs and its EAPC
DALYs of EC in the US increased from 252664.30 years in 1990 to 405489.95 years in 2017. Additionally, the ASR of DALYs decreased from 83.73 years per 100,000 to 78.58 years per 100,000 in the same period, with an average − 0.471% per year change. In both 1990 and 2017, the DALYs and ASR of DALYs were more in males compared with females. However, a decreasing trend was recorded in the ASRs of DALYs for both males (EAPC = -0.449%) and females (EAPC = -1.084%). In 2017, the most significant risk factor contributing to DALYs was smoking (160233.75 years). On the contrary, alcohol use had the largest ASR of DALYs (31.01 years/100,000), followed by high BMI, smoking, low fruit-diet, and chewing tobacco. Smoking had the rapidest declining ASR of DALYs (EAPC = -1.912%), followed by chewing tobacco (EAPC = -0.627%), and alcohol use (EAPC = -0.197%). In contrast, the changes in ASR of DALYs attributed to high BMI, and low-fruit diet increased with an EAPC of 0.510% and 0.280%, respectively (Table 3).
Table 3
The DALYs and age-standardized DALYs rate of esophageal cancer in 1990 and 2017, and its temporal trends from 1990 to 2017.
Category
|
Year ×1000 (95% UI)
|
ASR per 100,000 (95% UI)
|
EAPC % (95% CI)
|
1990
|
2017
|
1990
|
2017
|
1990–2017
|
Overall
|
213467.95
(226157.04, 198788.43)
|
330723.23
(364856.87, 290539.06)
|
70.92
(75.17, 66.02)
|
64.18
(70.78, 56.44)
|
-1.238
(-1.121, -1.355)
|
Sex
|
|
|
|
|
|
Male
|
172728.76
(183291.51, 160688.33)
|
281353.02
(311060.98, 245363.34)
|
126.79
(134.59, 117.80)
|
115.36
(127.51, 100.63)
|
-0.576
(-0.441, -0.711)
|
Female
|
40739.19
(46360.38, 34711.73)
|
49370.21
(58521.31, 39108.44)
|
23.91
(27.11, 20.44)
|
18.04
(21.33, 14.34)
|
-0.563
(-0.422, -0.703)
|
Risk factors
|
|
|
|
|
|
Smoking
|
145477.43
(157890.44, 131987.58)
|
160233.75
(179799.14, 140237.02)
|
47.94
(51.97, 43.76)
|
30.48
(34.20, 26.71)
|
-1.912
(-1.719, -2.105)
|
Alcohol use
|
93814.69
(116931.38, 69625.24)
|
156948.51
(200340.05, 109707.07)
|
31.84
(39.44, 23.69)
|
31.01
(39.36, 21.96)
|
-0.197
(-0.055, -0.338)
|
High body-mass index
|
75075.05
(130926.43, 25248.13)
|
156932.18
(254322.82, 53341.17)
|
25.24
(43.73, 8.47)
|
30.52
(49.33, 10.33)
|
0.510
(0.716, 0.304)
|
Diet low in fruits
|
34341.41
(68026.85, 7056.94)
|
62790.16
(121273.22, 13272.90)
|
11.42
(22.64, 2.34)
|
12.26
(23.59, 2.61)
|
0.280
(0.360, 0.200)
|
Chewing tobacco
|
12574.38
(18307.86, 7217.65)
|
19609.44
(30394.92, 10350.81)
|
4.19
(6.13, 2.39)
|
3.81
(5.91, 2.05)
|
-0.627
(-0.542, -0.711)
|
DALYs, mortality and disability adjusted life years; ASR, age-standardized rate; CI, confidence interval; EAPC, estimated annual percentage change; UI, uncertainty interval. |
The highest increase in DALYs was observed in Nevada (214.37%), followed by Alaska (190.52%), and Utah (169.73%), whereas the lowest increase was recorded in New York (5.23%), New Jersey (15.59%), and Illinois (28.39%). A decrease in EC DALYs was only recorded in the District of Columbia (-35.79%) (Fig. 4A). In 2017, the highest ASR of DALYs was observed in the District of Columbia (131.86 years per 100,000), followed by Maine (108.18 years per 100,000), and Ohio (102.15 years per 100,000). In contrast, the lowest ASR of DALYs was recorded in Utah (56.76 years per 100,000), followed by California (58.65 years per 100,000), and then Hawaii (61.16 years per 100,000) (Fig. 4B). Although the ASR of DALYs was highest in the District of Columbia, the state experienced a rapidest decline in ASR of DALYs between 1990 and 2017, with an EAPC of -2.730%. This was closely followed by Maryland (EAPC =- 1.478%) and New York (EAPC = -1.332%). The highest increase in ASR of DALYs was observed in Oklahoma (EAPC = 1.151%), followed by West Virginia (EAPC = 1.103%), and Arkansas (EAPC = 0.811%). Ten states sustained a constant ASR of DALYs (Fig. 4C). There was not a significant association between PCDPI and EAPC of DALYs, neither between PCDPI and ASR of DALYs (Fig. 4D,E).
In 2017, the highest ASR of DALYs attributed to smoking, alcohol use, high BMI, and low-fruit diet was observed in the District of Columbia, i.e., 53.57 years per 100,000, 53.99 years per 100,000, 53.08 years per 100,000, 18.40 years per 100,000, respectively. In contrast, the highest ASR of DALYs attributed to tobacco chewing was recorded in West Virginia (15.92 years per 100,000) (Fig. 5A). The highest increase in ASR of DALYs as a result of high BMI and low-fruit diet was recorded in Oklahoma (EAPC = 2.505% and 2.186%, respectively), while that attributed to alcohol use was observed in West Virginia (EAPC = 1.462%), and chewing tobacco in Arkansas (EAPC = 1.556%). In contrast, the most significant decrease in ASRs of DALYs attributed to smoking, alcohol use, high BMI, and chewing tobacco was recorded in the District of Columbia (EAPC − 4.178%, -2.668%, -2.195%, and − 2.503%, respectively). The most significant decrease in ASRs of DALYs attributed to the low-fruit diet risk factor was recorded in California (EAPC = -1.276%). There was a decrease in ASR of DALYs attributed to smoking in all the states except Oklahoma (with an insignificant EAPC). However, ASR of DALYs attributed to high BMI, and low-fruit diet increased in a significant number of the states (Fig. 5B). A negative correlation was observed between PCDPI and ASR of DALYs attributed to smoking, low-fruit diet, and chewing tobacco (Fig. 5C-G) similar to the EAPC of DALYs attributed to all risk factors except chewing tobacco (Fig. 5H-L).