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. Author manuscript; available in PMC: 2011 Oct 8.
Published in final edited form as: J Manipulative Physiol Ther. 2010 Oct 8;33(8):562–575. doi: 10.1016/j.jmpt.2010.08.017

Table 4a.

Approximating Episodes-of-Pain for “Users” (N=8,244) and “Non-Users” (N=1,949) of back pain services.

“Users”a Round-by-Round Pattern Frequency Percent “Non-Users”b Round-by-Round Pattern Frequency Percent
OOOOX 674 8.2 OOOOX 187 9.6
OOOXO 822 10.0 OOOXO 246 12.6
OOOXX 468 5.7 OOOXX 53 2.7
OOXOO 674 8.2 OOXOO 247 12.7
OOXOX 121 1.5 OOXOX 19 1.0
OOXXO 254 3.1 OOXXO 35 1.8
OOXXX 294 3.6 OOXXX 20 1.0
OXOOO 683 8.3 OXOOO 305 15.6
OXOOX 82 1.0 OXOOX 13 .7
OXOXO 120 1.5 OXOXO 20 1.0
OXOXX 97 1.2 OXOXX 12 .6
OXXOO 256 3.1 OXXOO 62 3.2
OXXOX 85 1.0 OXXOX 7 .4
OXXXO 155 1.9 OXXXO 12 .6
OXXXX 356 4.3 OXXXX 15 .8
XOOOO 513 6.2 XOOOO 402 20.6
XOOOX 64 .8 XOOOX 24 1.2
XOOXO 83 1.0 XOOXO 15 .8
XOOXX 57 .7 XOOXX 4 .2
XOXOO 108 1.3 XOXOO 43 2.2
XOXOX 28 .3 XOXOX 3 .2
XOXXO 65 .8 XOXXO 6 .3
XOXXX 110 1.3 XOXXX 8 .4
XXOOO 340 4.1 XXOOO 74 3.8
XXOOX 60 .7 XXOOX 9 .5
XXOXO 76 .9 XXOXO 8 .4
XXOXX 105 1.3 XXOXX 9 .5
XXXOO 207 2.5 XXXOO 47 2.4
XXXOX 101 1.2 XXXOX 5 .3
XXXXO 208 2.5 XXXXO 13 .7
XXXXX 978 11.9 XXXXX 26 1.3
Total 8244 100.0 Total 1949 100.0

Note: “X” indicates a Round “active” for Back Pain occurrence, “O” indicates a Round “inactive” for Back Pain occurrence.

a

Users” (n = 8,244) are adult MEPS respondents with back pain identified in both the Medical Conditions file and the Utilization Event files.

b

Non-Users” (n = 1,949) are adult MEPS respondents with back pain identified in only the Medical Conditions file but not the Utilization Events files, i.e. individuals who did not use any services for their back pain during the MEPS 2-year panel timeframe. This table approximates Episodes-of-Pain, using MEPS Medical Conditions file to map temporal occurrence of back pain across All-5-Rounds of 2-year longitudinal panel. Tabled Data are for adults, pooled across MEPS Panels 5-through-10 (N=10,193).