Table 3b.

Six categories of similar patterns of approximated Back Pain Episodes-of-Care groups for “Users” of back pain services (N = 8,244)

		CCC ”205”	ICD “846”,“847”	Both
A1) Single BP Period - Uncensored One “active” round preceded and followed by “inactive” rounds Round-by-Round Patterns: OOOXO, OOXOO, OXOOO	n = 2,824	80.4%	19.2%	.4%
A2) Single BP Period – Censored One “active” round bounded on one side by sample frame and bounded on other side by “inactive” rounds Round-by-Round Patterns: OOOOX, XOOOO	n = 1,526	83.9%	15.8%	.3%
B1) Two contiguous BP Periods - Uncensored Two “active” rounds preceded and followed by “inactive” round Round-by-Round Patterns: OXXOO, OOXXO	n = 516	86.0%	9.5%	4.5%
B2) Two contiguous BP Periods - Censored Two “active” rounds bounded on one side by sample frame and bounded on other side by “inactive” rounds Round-by-Round Patterns: XXOOO, OOOXX	n = 673	88.3%	8.3%	3.4%
C) Three or more contiguous BP Periods Round-by-Round Patterns: OOXXX, OXXXO, XXXOO, OXXXX, XXXXO, XXXXX	n = 1,495	92.8%	3.3%	3.9%
D) Multiple, recurrent BP Periods Two or more “active” rounds interspersed with “inactive” rounds Round Patterns: OOXOX, OXOOX, OXOXO, OXOXX, OXXOX, XOOOX, XOOXO, XOOXX, XOXOO, XOXOX, XOXXO, XOXXX, XXOOX, XXOXO, XXOXX, XXXOX.	n = 1,210	88.4%	6.3%	5.3%

Note: Reading Row one as example, of the 2,824 individuals in category (A1), 80.4% were identified with only the chronic back pain CCC code “205” in all of their ambulatory events in the MEPS Utilization Events files, 19.2% were identified with only the acute back pain ICD “846” or “847” codes for all of their events, and less than 1% were identified as having both types of events (some of their events coded as CCC “205” and some of their events coded as ICD “846”,”847”).

This table constructs 6 categories of similar patterns of approximated Back Pain Episodes-of-Care groups, for adult Back Pain cases identified in MEPS Panels 5-through-10 Ambulatory Utilization Events files, Office-Based, Outpatient, ER, and Rx (N = 8,244).