Table 1.

Numbers of adults (>18 years) with different conditions in the Medical Expenditure Panel Survey (MEPS) data

	Number of adult individuals*	Percent of US adults	Percent of adult medical events
Surveyed in MEPS & with medical events (2003–2015)	130,767	100.0%	100.0%
With at least one spinal (CCC 205 or ICD-9 of 846 or 847) event	17,776	16.9%	27.4%
With chronic spinal pain	5,824	6.0%	13.8%
With chronic spinal pain & with impact level (SF-12) data available	5,151	5.3%	12.6%
With chronic low-back pain (ICD-9 724) & impact level (SF12) data available	3,457	3.6%	8.5%
With chronic neck pain (ICD-9 723) & impact level (SF12) data available	778	0.8%	2.2%
With pain from chronic sacroiliac sprain/strain (ICD-9s 846 and 847) & impact level (SF-12) data available	428	0.4%	1.1%
With chronic spinal pain & predicted to have low impact chronic spinal pain	2,100	2.4%	5.3%
With chronic spinal pain & predicted to have moderate impact chronic spinal pain	967	1.1%	2.7%
With chronic spinal pain & predicted to have high impact chronic spinal pain	2,401	2.2%	5.8%

CCC 205 = Clinical Classification Code that includes “Spondylosis, intervertebral disc disorders & other back problems”; ICD-9 = International Classification of Diseases, 9^th Revision; SF-12 = 12-item short form of the Medical Outcomes Survey

^*The total number of individuals across each chronic pain impact level sum to more than are shown as having chronic spinal pain and SF-12 data because some individuals experienced different chronic pain impact levels across their two years of data.