3.1 Incidence of NMSC in China and the world
Compared with 1990, the number of global NMSC cases in 2021 increased from 1,661,600 to 6,336,800, with an increased rate of 281.37% and an upward trend for AAPC=4.37% (95%CI: 4.29%~4.44%); the incidence rate and age-standardized incidence rate (ASIR) increased from 31.15/100,000 and 45.04/100,000 to 80.30/100,000 and 74.10/100,000, respectively, with an increased rate of 157.78% and 64.52%, showed an upward trend, and the AAPC was 3.06% (95%CI: 2.93%~3.15%) and 1.57% (95%CI: 1.49%~1.64%), respectively. (Table 1)
The number of NMSC cases in China increased from 39,500 to 791,900, and the increased rate (1904.81%) and upward trend (AAPC=9.88% (95%CI: 9.16%~10.37%)) were higher than that of the global level; the incidence rate and ASIR increased from 3.36/100,000 and 4.65/100,000 in 1990 to 55.66/100,000 and 37.54/100,000 in 2021, respectively, and both were lower than the global level in the same period, but their increase rates (1556.55% and 707.31%) and AAPC (9.22% (95%CI: 8.51%~9.71%) and 6.71% (95%CI: 6.01%~7.18%)) were significantly higher than the global level. (Table 1)
Table 1 The incidence of NMSC in China and global, 1990-2021
Sex
|
Incidence
(10,000 cases)
|
|
Incidence rate
(per 100,000)
|
|
ASIR
(per 100,000)
|
China
|
Global
|
|
China
|
Global
|
|
China
|
Global
|
Both
|
|
|
|
|
|
|
|
|
1990
|
3.95
|
166.16
|
|
3.36
|
31.15
|
|
4.65
|
45.04
|
2021
|
79.19
|
633.68
|
|
55.66
|
80.30
|
|
37.54
|
74.10
|
Change (%)
|
1904.81
|
281.37
|
|
1556.55
|
157.78
|
|
707.31
|
64.52
|
AAPC (%)
|
9.88a
|
4.37a
|
|
9.22a
|
3.06a
|
|
6.71a
|
1.57a
|
95%CI
|
9.16~10.37
|
4.29~4.44
|
|
8.51~9.71
|
2.93~3.15
|
|
6.01~7.18
|
1.49~1.64
|
Male
|
|
|
|
|
|
|
|
|
1990
|
2.15
|
87.40
|
|
3.55
|
32.54
|
|
5.34
|
55.30
|
2021
|
44.37
|
369.63
|
|
60.94
|
93.36
|
|
43.66
|
95.82
|
Change (%)
|
1963.72
|
322.92
|
|
1616.62
|
186.91
|
|
717.60
|
73.27
|
AAPC (%)
|
9.99a
|
4.72a
|
|
9.36a
|
3.44a
|
|
6.77a
|
1.79
|
95%CI
|
9.29~10.47
|
4.63~4.79
|
|
8.67~9.84
|
3.31~3.53
|
|
6.10~7.22
|
1.69~1.88
|
Female
|
|
|
|
|
|
|
|
|
1990
|
1.80
|
78.77
|
|
3.15
|
29.75
|
|
4.11
|
38.23
|
2021
|
34.82
|
264.05
|
|
50.12
|
67.16
|
|
32.57
|
57.33
|
Change (%)
|
1834.44
|
235.22
|
|
1491.11
|
125.75
|
|
692.46
|
49.96
|
AAPC (%)
|
9.75a
|
3.87a
|
|
9.06a
|
2.63a
|
|
6.62a
|
1.20a
|
95%CI
|
8.99~10.25
|
3.76~3.96
|
|
8.31~9.56
|
2.47~2.73
|
|
5.87~7.12
|
1.09~1.29
|
NMSC, Non-melanoma skin cancer; ASIR, Age-standardized incidence rate; AAPC, Average annual percentage of change; a P < 0.001.
Both in China and the world, the incidence cases, incidence and ASIR and corresponding increase rates and AAPC were higher in men than in women. In China, the age group with the highest incidence cases was 65-74 years old and the lowest was 85+ years old. Globally, the age group with the highest incidence cases was 65-74 years, and the lowest was 55-59 years. The age group with the lowest incidence in China and the world was 20-54 years old, the age group with the highest incidence in China was 80-84 years old, and the age group with the highest incidence in the world was 85+ years old. (Table 1, Figure 1)
In 2022-2036, the ASIR of the Chinese population showed an increasing trend, with the male and female ASIR increasing from 79.94/100,000 and 63.35/100,000 in 2022 to 984,734.59/100,000 and 1,007,157.09/100,000 in 2036, respectively; and the global ASIR showed an increasing trend, with the male and female ASIR increased from 97.89/100,000 and 59.13/100,000 in 2022 to 173.16/100,000 and 111.51/100,000 in 2036. (Figure 2)
3.2 Mortality of NMSC in China and the world
Compared with 1990, the global deaths in 2021 increased from 22,700 to 56,900, with an increase of 150.66% and an upward trend for AAPC=3.03% (95%CI: 3.00%~3.05%); the mortality rate and the age-standardized mortality rate (ASMR) increased from 0.42/100,000 and 0.67/100,000 to 0.72/100,000 and 0.69/100,000, respectively, with an increased rate of 71.43% and 2.99%, and an AAPC of 1.74% (95%CI: 1.71%~1.76%) and 0.14% (95%CI: 0.12%~0.16%), respectively. (Table 2)
The NMSC deaths in China increased from 5,200 to 16,600, and the increased rate (219.23%) and upward trend (AAPC=3.75% (95%CI: 3.68%~3.80%)) were higher than that of the global level; the mortality rate and ASMR increased from 0.44/100,000 and 0.75/100,000 in 1990 to 1.17/100,000 and 0.87/100,000 in 2021, respectively, which were consistently higher than the global level during the same period, as were the increased rates (165.91% and 16.00%) and AAPC (3.17% (95%CI: 3.09%~3.22%) and 0.46% (95%CI: 0.40%~0.52%). (Table 2)
Table 2 The mortality of NMSC in China and global, 1990-2021
Sex
|
Mortality
(10,000 cases)
|
|
Mortality rate
(per 100,000)
|
|
ASMR
(per 100,000)
|
China
|
Global
|
|
China
|
Global
|
|
China
|
Global
|
Both
|
|
|
|
|
|
|
|
|
1990
|
0.52
|
2.27
|
|
0.44
|
0.42
|
|
0.75
|
0.67
|
2021
|
1.66
|
5.69
|
|
1.17
|
0.72
|
|
0.87
|
0.69
|
Change (%)
|
219.23
|
150.66
|
|
165.91
|
71.43
|
|
16.00
|
2.99
|
AAPC (%)
|
3.75a
|
3.03a
|
|
3.17a
|
1.74a
|
|
0.46a
|
0.14a
|
95%CI
|
3.68~3.80
|
3.00~3.05
|
|
3.09~3.22
|
1.71~1.76
|
|
0.40~0.52
|
0.12~0.16
|
Male
|
|
|
|
|
|
|
|
|
1990
|
0.28
|
1.28
|
|
0.46
|
0.48
|
|
0.93
|
0.88
|
2021
|
0.85
|
3.22
|
|
1.17
|
0.81
|
|
1.03
|
0.92
|
Change (%)
|
203.57
|
151.56
|
|
154.35
|
68.75
|
|
10.75
|
4.55
|
AAPC (%)
|
3.59a
|
3.05a
|
|
2.94a
|
1.75a
|
|
0.23a
|
0.16a
|
95%CI
|
3.51~3.67
|
3.03~3.07
|
|
2.86~3.01
|
1.73~1.77
|
|
0.09~0.33
|
0.14~0.17
|
Female
|
|
|
|
|
|
|
|
|
1990
|
0.24
|
0.99
|
|
0.42
|
0.37
|
|
0.64
|
0.52
|
2021
|
0.81
|
2.47
|
|
1.16
|
0.63
|
|
0.77
|
0.53
|
Change (%)
|
237.50
|
149.49
|
|
176.19
|
70.27
|
|
20.31
|
1.92
|
AAPC (%)
|
3.97a
|
3.03
|
|
3.38a
|
1.72a
|
|
0.60a
|
0.08
|
95%CI
|
3.91~4.02
|
2.98~3.07
|
|
3.30~3.46
|
1.68~1.75
|
|
0.53~0.67
|
0.04~0.11
|
NMSC, Non-melanoma skin cancer; ASMR, Age-standardized mortality rate; AAPC, Average annual percentage of change; a P < 0.001.
Both in China and the world, the deaths, mortality rates and ASMR for NMSC were higher in men than in women, and the corresponding increase rates and AAPC were higher in men globally, but lower in men in China. The age group with the highest NMSC deaths in China was 65-74 years, and the lowest was 55-59 years; the age group with the highest deaths globally was 85+ years, and the lowest was 55-59 years. The lowest age group for mortality in both China and globally was 20-54 years, and the highest was 85+ years. (Table 2, Figure 3)
Both the Chinese and global population-based ASMR were predicted to show a decreasing trend in 2022-2036, with the Chinese male and female ASMR decreased from 0.88/100,000 and 0.68/100,000 in 2022 to 0.82/100,000 and 0.56/100,000 in 2036, respectively, and the global male and female ASMR decreased from 0.78/100,000 and 0.45/100,000 in 2022 to 0.67/100,000 and 0.39/100,000 in 2036. (Figure 4)
3.3 DALY of NMSC in China and the world
Compared to 1990, global DALY in 2021 increased from 545,600 to 1,122,900 person-years, the increased rate was 122.31%, and the AAPC was 2.61% (95%CI: 2.59% to 2.63%); the DALY rate and the age-standardized DALY rate (ASDR) increased from 10.23/100,000 and 14.02/100,000 to 15.37/100,000 and 14.33/100,000, respectively, the increased rate was 50.24% and 2.21%, respectively, and the AAPC was 1.31% (95%CI: 1.29%~1.33%) and 0.07% (95%CI: 0.04%~0.08%), respectively. (Table 3)
Table 3 The burden of NMSC in China and global, 1990-2021
Sex
|
DALY (per 100,000)
|
|
DALY rate (per 100,000)
|
|
ASDR (per 100,000)
|
China
|
Global
|
|
China
|
Global
|
|
China
|
Global
|
Both
|
|
|
|
|
|
|
|
|
1990
|
14.01
|
54.56
|
|
11.91
|
10.23
|
|
16.34
|
14.02
|
2021
|
36.08
|
121.29
|
|
25.36
|
15.37
|
|
17.98
|
14.33
|
Change (%)
|
151.53
|
122.31
|
|
112.93
|
50.24
|
|
10.04
|
2.21
|
AAPC (%)
|
3.07a
|
2.61a
|
|
2.45a
|
1.31a
|
|
0.28a
|
0.07a
|
95%CI
|
2.97~3.12
|
2.59~2.63
|
|
2.37~2.50
|
1.29~1.33
|
|
0.22~0.34
|
0.04~0.08
|
Male
|
|
|
|
|
|
|
|
|
1990
|
7.49
|
32.35
|
|
12.34
|
12.04
|
|
18.71
|
18.26
|
2021
|
18.85
|
71.78
|
|
25.88
|
18.13
|
|
20.23
|
18.61
|
Change (%)
|
151.67
|
121.89
|
|
109.72
|
49.75
|
|
8.12
|
1.92
|
AAPC (%)
|
3.01a
|
2.61a
|
|
2.36a
|
1.33a
|
|
0.18
|
0.04
|
95%CI
|
2.91~3.08
|
2.59~2.63
|
|
2.24~2.43
|
1.30~1.35
|
|
0.06~0.26
|
0.01~0.07
|
Female
|
|
|
|
|
|
|
|
|
1990
|
6.52
|
22.21
|
|
11.45
|
8.39
|
|
14.77
|
10.63
|
2021
|
17.23
|
49.51
|
|
24.82
|
12.59
|
|
16.34
|
10.82
|
Change (%)
|
164.26
|
122.92
|
|
116.77
|
50.06
|
|
10.63
|
1.79
|
AAPC (%)
|
3.16a
|
2.63a
|
|
2.56a
|
1.31a
|
|
0.35a
|
0.07a
|
95%CI
|
3.10~3.20
|
2.61~2.66
|
|
2.48~2.62
|
1.28~1.34
|
|
0.29~0.41
|
0.04~0.09
|
NMSC, Non-melanoma skin cancer; ASDR, Age-standardized disability-adjusted life years rate; AAPC, Average annual percentage of change; DALY, Disability-adjusted life years; a P < 0.001.
DALY due to NMSC in China increased from 140,100 to 360,800 person-years, and the increased rate (151.53%) and AAPC (3.07% (95%CI: 2.97%~3.12%)) were higher than that of the global level; the DALY rate and ASDR increased from 11.91/100,000 and 16.34/100,000 in 1990 to 25.36/100,000 and 17.98/100,000 in 2021, respectively, both of which were higher than the global level in the same period, and their increased rates (112.93% and 10.04%) and AAPC (2.45% (95%CI: 2.37%~2.50%) and 0.28% (95%CI: 0.22%~0.34%)) were also higher than the global level. (Table 3)
Both in China and globally, DALY, DALY rate and ASDR were higher in men than in women, and the corresponding increased rate and AAPC were lower in Chinese men than in women. DALY increased with age in both China and globally; the lowest DALY rate in China was in the 20-54 age group and the highest in the 85+ age group; the lowest DALY rate globally was in the 20-54 age group and the highest in the 85+ age group. (Table 3, Figure 5)
In 2022-2036, it was predicted that the ASDR in Chinese males will increase from 19.22/100,000 in 2022 to 21.79/100,000 in 2036; the ASDR in Chinese females will decrease from 15.44/100,000 in 2022 to 13.98/100,000 in 2036. The global ASDR in males and females will decrease from 17.24/100,000 and 10.13/100,000 in 2022 to 15.40/100,000 and 8.95/100,000 in 2036, respectively. (Figure 6)