. 2019 Mar 29;8(5):2496–2502. doi: 10.1002/cam4.1867

Table 4.

The numbers of adenomas at different age‐groups

	Age‐groups	Cases of colonoscopy	Cases of adenomas	x ²	P values
Age‐group 1	30‐39	83	3 (3.61%)	14.906	7.87 × 10⁻⁶
Age‐group 1	40‐80	4630	968 (20.91%)	14.906	7.87 × 10⁻⁶
Age‐group 2	30‐44	437	41 (9.38%)	37.071	3.64 × 10⁻¹¹
Age‐group 2	45‐80	4276	930 (21.75%)	37.071	3.64 × 10⁻¹¹
Age‐group 3	30‐49	900	104 (11.56%)	55.66	2.89 × 10⁻¹⁵
Age‐group 3	50‐80	3813	867 (22.74%)	55.66	2.89 × 10⁻¹⁵