Table 1.

Characteristics of Patients Identified as Undergoing Screening or Follow-Up Colonoscopy

	Any Colonoscopy	Indication		Polypectomy
		Screening	Follow-Up	No	Yes
Total	43,456	38,472	4,984	22,885	20,571
Female	22,081 (51%)	19,835 (52%)	2,426 (45%)	12,830 (56%)	9,251 (45%)
Age
40–49	2,642 (6.1%)	2,450 (6.4%)	192 (3.9%)	1,507 (6.6%)	1,135 (5.5%)
50–64	31,262 (72%)	28,565 (74%)	2,697 (54%)	16,722 (73%)	14,540 (71%)
65–74	7,213 (17%)	5,804 (15%)	1,409 (28%)	3,485 (15%)	3,728 (18%)
75–85	2,339 (5.4%)	1,653 (4.3%)	686 (14%)	1,171 (5.1%)	1,158 (5.7%)
Year
1994–1997	2,093 (4.8%)	864 (2.3%)	1,229 (25%)	1,085 (4.7%)	1,008 (4.9%)
1998–2001	3,210 (7.4%)	2,033 (5.3%)	1,177 (24%)	1,647 (7.2%)	1,563 (7.6%)
2002–2005	13,167 (30%)	11,762 (31%)	1,405 (28%)	7,352 (32%)	5,815 (28%)
2006–2009	24,986 (58%)	23,813 (62%)	1,173 (24%)	12,801 (56%)	12,185 (59%)
Klabunde Score
0	32,360 (80%)	28,767 (80%)	3,593 (76%)	17,414 (81%)	14,946 (78%)
1	6,317 (15%)	5,480 (15%)	837 (18%)	3,135 (15%)	3,182 (17%)
2	1,380 (3.4%)	1,153 (3.2%)	227 (4.8%)	639 (3.0%)	741 (3.9%)
3+	558 (1.4%)	468 (1.3%)	90 (1.9%)	259 (1.2%)	299 (1.6%)