2.1 Basic information on screening in 2023
In 2023, 1,975 people will participate in assessment and 1,560 people will participate in clinical screening. The participation rate of clinical screening was 78.99%. There were 52 high-risk patients with one type of cancer, accounting for 2.63%; 249 patients with high risk of 2 types of cancer, accounting for 12.61%; There were 629 high-risk patients with 3 types of cancer, accounting for 31.85%; 604 patients were at high risk of 4 types of cancer, accounting for 30.58%; 295 patients were at high risk of 5 types of cancer, accounting for 14.94%. Among them, 1080 patients had a high risk of lung cancer (high risk rate 54.68%), and 861 patients participated in clinical screening, including 371 males (clinical screening participation rate 78.44%) and 490 females (clinical screening participation rate 80.72%), with statistical significance (χ2 = 38.251, P < 0.001). There were 603 patients with high risk of liver cancer (high risk rate 30.53%), and 399 patients participated in clinical screening, 179 males (clinical screening participation rate 63.48%) and 220 females (clinical screening participation rate 68.54%), the difference was statistically significant (χ2 = 14.826, P < 0.001). There were 1005 patients with high risk of breast cancer (high risk rate 50.89%), and 814 patients participated in clinical screening, all of whom were female, with a participation rate of 81.00%. There were 882 patients with high risk of colorectal cancer (high risk rate of 44.66%), and 579 patients participated in clinical screening, 278 males (clinical screening participation rate of 63.04%) and 301 females (clinical screening participation rate of 68.25%), the difference was statistically significant (χ2 = 54.599, P < 0.001). There were 1076 patients with high risk of upper digestive tract cancer (high risk rate 54.48%), and 668 patients participated in clinical screening, including 264 males (clinical screening participation rate 59.86%) and 404 females (clinical screening participation rate 60.75%), with statistical significance (χ2 = 5.238, P < 0.05). By age group comparison, it was found that lung cancer, liver cancer, breast cancer and colorectal cancer screening groups of all ages had statistical differences in whether to participate in clinical screening (P < 0.001) (Table 1).
Table 1
Participation in clinical screening by cancer group in 2023
characteristics | groups | Lung cancer | Liver cancer | Breast cancer | Colorectal cancer | upper gastrointestinal cancer |
Number of screening cases | Participation rate | Number of screening cases | Participation rate | Number of screening cases | Participation rate | Number of screening cases | Participation rate | Number of screening cases | Participation rate |
Total | | 861 | 55.12% | 399 | 25.54% | 814 | 52.11% | 579 | 37.07% | 668 | 42.77% |
Sex | | | | | | | | | | | |
| Male | 371 | 78.44% | 179 | 63.48% | 0 | 0.00% | 278 | 63.04% | 264 | 59.86% |
| Female | 490 | 80.72% | 220 | 68.54% | 814 | 81.00% | 301 | 68.25% | 404 | 60.75% |
χ2 | - | 38.251 | 14.826 | - | 54.599 | 5.238 |
P | - | <0.001 | <0.001 | - | <0.001 | 0.022 |
Age | | | | | | | | | | | |
| 45–49 years old | 0 | 0.00% | 17 | 53.13% | 129 | 72.88% | 72 | 63.16% | 84 | 53.50% |
| 50–54 years old | 229 | 76.59% | 94 | 62.67% | 235 | 79.93% | 121 | 65.76% | 172 | 57.33% |
| 55–59 years old | 283 | 80.17% | 128 | 69.57% | 227 | 83.15% | 151 | 67.11% | 176 | 66.67% |
| 60–64 years old | 191 | 80.59% | 96 | 65.31% | 147 | 85.96% | 129 | 70.88% | 117 | 64.29% |
| 65–69 years old | 105 | 76.64% | 49 | 69.01% | 59 | 83.10% | 75 | 58.14% | 84 | 66.67% |
| 70–74 years old | 53 | 98.15% | 15 | 78.95% | 17 | 89.47% | 31 | 65.96% | 35 | 74.47% |
χ2 | - | 280.365 | 37.919 | 65.910 | 20.440 | 11.055 |
P | - | <0.001 | <0.001 | <0.001 | <0.001 | 0.050 |
2.2 sex comparison of changes in high-risk rates in the 2022 and 2023 screening populations
In 2022, 3301 people are at high risk, with a high risk rate of 80.06%. Among them, 1106 men were at high risk, with a high risk rate of 77.83%, and 2195 women were at high risk, with a high risk rate of 81.24%. There was a difference in the high risk rate between men and women (P < 0.05). In 2023, 1587 people are at high risk, with a high risk rate of 92.61%. There were 694 males with a high risk rate of 91.44% and 1135 females with a high risk rate of 93.34%. There was no statistically significant difference between the two groups (P = 0.116). A comparison of two years of data found that both male and female populations had higher risk rates in 2023 than in 2022 (Fig. 1).
2.3 The change in the risk rate of the screened population in 2022 and 2023 was compared by 3 age groups
In the 2022 screening population, the highest risk rate was in the 55–59 age group (84.32%), followed by 60–64 years old (84.28%), 50–54 years old (81.69%), 65–69 years old (81.57%), 45–49 years old (68.04%) and 70–74 years old (65.94%). The difference of high risk rate among different age groups was statistically significant (P < 0.001). In the screening population in 2023, the statistical high risk rates from high to low were 70–74 years old (98.48%), 60–64 years old (97.99%), 65–69 years old (96.60%), 55–59 years old (95.28%), 50–54 years old (94.56%), and 45–49 years old (76.13%). The difference of high risk rate among different age groups was statistically significant (P < 0.001). The two-year data comparison shows that the middle age group has a higher risk rate in 2022, and the high age group has a higher risk rate in 2023 (Fig. 2).
2.4 The changes in the composition of clinical screening program participants in the 2022 and 2023 screening populations were compared by age group and sex
In 2022, 2840 people will participate in clinical screening projects, and in 2023, 1560 people will participate in clinical screening projects. In 2022, there were 939 males, accounting for 33.06%, and 1901 females, accounting for 66.94%; In 2023, there were 567 males, accounting for 36.35%, and 993 females, accounting for 63.65%. Two years of data showed similar sex composition ratios in the screening population (Figs. 3 and 4).
In 2022, according to the proportion of age groups participating in screening, the 55–59 age group has the largest number (31.27%), followed by the 50–54 age group (31.09%), the 60–64 age group (15.99%), and the 65–69 age group (9.96%). Last were those aged 45–49 years (9.30%) and 70–74 years (2.39%). In 2023, the proportion of people in different age groups participating in the screening in descending order was 55–59 years old (28.14%), 50–54 years old (25.45%), 60–64 years old (19.42%), 45–49 years old (12.12%), 65–69 years old (10.83%), and 70–74 years old (4.04%) ). In 2022 and 2023, the population participating in the clinical screening program in different age groups has similar distribution, with the largest number in the 55–59 age group, the least in the 70–74 age group, and the middle in other age groups (FIG. 5 and FIG. 6).
2.5 Comparison of the detection of positive lesions of various cancer types in 2022 and 2023
In 2022, 3 cases of lung cancer were detected, the detection rate was 0.19%; Breast cancer was detected in 21 cases, the detection rate was 1.74%. Colorectal cancer was detected in 5 cases, the detection rate was 0.61%. 13 cases of upper digestive tract cancer were detected, the detection rate was 1.21%. In 2023, 1 case of liver cancer (detection rate 0.21%), 1 case of colorectal cancer (detection rate 0.13%) and 6 cases of upper digestive tract cancer (detection rate 0.63%) were detected. In 2022, other positive lesions besides cancer were detected in lung 1023 cases (detection rate of 63.15%), liver 37 cases (detection rate of 13.45%), breast 315 cases (detection rate of 26.14%), colorectal 225 cases (detection rate of 27.41%), and upper digestive tract 849 cases (detection rate of 78.83%). In 2023, other positive lesions besides cancer were detected in 744 cases of lung (detection rate 81.13%), 19 cases of liver (detection rate 3.96%), 196 cases of breast (detection rate 22.66%), 152 cases of colorectal (detection rate 20.08%), and 457 cases of upper digestive tract (detection rate 48.00%). Compared with 2022, the detection rate of cancer in various sites in 2023 has decreased, and the detection rate of other positive lesions except cancer in liver, breast, colorectal and upper digestive tract has also decreased, but the detection rate of other positive lesions except cancer in lung has increased by 17.98% (Table 2).
Table 2
Comparison of positive lesions detected by various cancer types in 2022 and 2023
| Cancer | Other positive lesions |
| 2022 | 2023 | 2022 | 2023 |
Lung cancer | 3(0.19%) | 0(0.00%) | 1023(63.15%) | 744(81.13%) |
Liver cancer | 0(0.00%) | 1(0.21%) | 37(13.45%) | 19(3.96%) |
Breast cancer | 21(1.74%) | 0(0.00%) | 315(26.14%) | 196(22.66%) |
Colorectal cancer | 5(0.61%) | 1(0.13%) | 225(27.41%) | 152(20.08%) |
upper gastrointestinal cancer | 13(1.21%) | 6(0.63%) | 849(78.83%) | 457(48.00%) |