Table 4.

Incidence and recurrence rates of colorectal neoplasia in detail—advanced lesions

		Age group
Initial lesion	Sex	<40	40–49	50–59	⩾60
None	Female	0.00 [0.00–1.53]	0.16 [0.03–0.49]	0.31 [0.09–0.80]	1.00 [0.21–2.94]
		0/86×2.82	3/576×3.16	4/451×2.88	3/104×2.88
	Male	0.05 [0.00–0.27]	0.18 [0.08–0.34]	0.25 [0.09–0.54]	0.48 [0.13–1.23]
		1/567×3.69	9/1348×3.75	6/722×3.39	4/230×3.63
Small adenoma	Female	3.55 [0.09–19.0]	0.56 [0.07–2.02]	0.51 [0.06–1.84]	1.30 [0.16–4.73]
		1/11×2.56	2/117×3.08	2/121×3.26	2/56×2.75
	Male	0.21 [0.01–0.19]	0.43 [0.21–0.79]	0.67 [0.35–1.18]	1.36 [0.66–2.52]
		1/130×3.65	10/606×3.88	12/543×3.30	10/234×3.14
Advanced lesion	Female	0.00 [0.00–70.8]	0.00 [0.00–10.3]	2.05 [0.05–11.1]	2.26 [0.06–12.0]
		0/1×3.01	0/12×2.88	1/20×2.44	1/11×4.03
	Male	0.00 [0.00–12.3]	1.87 [0.62–4.38]	2.56 [1.30–4.58]	0.96 [0.12–3.46]
		0/11×2.59	5/79×3.38	11/118×3.64	2/71×2.93

Each cell represents “annual incidence rate (%/year) [95% confidence interval]” in the top row, and “number of cases with adenomas”/“number of subjects followed up “×”mean follow up time (year)” in the bottom row.