Table 3. Pooled estimates of detection rates with heterogeneity of screening colonoscopy studies.

Outcome	Reported by N studies	Pooled estimate (%)*	95 % CI	Heterogeneity (I2)
SDR	16	2.5 %	1.8 %–3.4 %	98.66 %
SDR for prospective studies	7	2.3 %	1.5 %–3.6 %	94.19 %
SDR for large studies (n > 1000)	13	2.4 %	1.7 %–3.4 %	98.89 %
SDR for prospective large studies	4	2 %	1.1 %–3.3 %	95.82 %
PSPDR	12	10 %	8.5 %–11.8 %	98.17 %
PSPDR for prospective studies	4	11 %	9.6 %–12.7 %	82.01 %
PSPDR for large studies (n > 1000)	11	10 %	8.4 %–11.9 %	98.34 %
PSPDR for prospective large studies	3	11.2 %	9.3 %–13.5 %	87.95 %
Any Serrated polyp detection rate	10	22 %	14.9 %–31.2 %	99.7 %
Large serrated polyp detection rate	6	1.6 %	1.2 %–2.2 %	89.87 %
Large SSL detection rate	4	1.1 %	0.5 %–2.2 %	95.53 %
Proximal SSL detection rate	5	1.6 %	1.1 %–2.4 %	93.59 %
SSL with dysplasia detection rate	7	0.8 %	0.4 %–1.6 %	92.78 %
TSA detection rate	6	0.2 %	0.1 %–0.6 %	82.64 %
Synchronous Advanced ADR	16	19.1 %	15.6 %–23.1 %	99.63 %
Clinically significant serrated polyp detection rate	4	6.3 %	4.6 %–8.5 %	98.4 %

*For all outcomes, P  < 0.01; SSL, sessile serrated lesion; SDR, SSL detection rate; PSPDR, proximal serrated polyp detection rate; ADR, adenoma detection rate; TSA, traditional serrated adenoma.