Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
PMC full text:
Spine (Phila Pa 1976). Author manuscript; available in PMC 2013 Sep 1.
Published in final edited form as:
Spine (Phila Pa 1976). 2012 Sep 1; 37(19): 1693–1701.
doi:  10.1097/BRS.0b013e3182541f45

Table 1

The Characteristics of US Adults with and without Spine Conditions in 1998 and 2008

19992008P-value for
between Adults
with Spine
Conditions 1999
to 2008c
No Spine
No Spine
No. of MEPS Respondents (sample)94116,4571,11022,269
Projected National Estimates
 No. of US adults (millions)11.9192.013.6216.8
 % of US adult population5.894.25.994.1
 US Region (%)
Sociodemographic Characteristics
 Age (mean)44.947.7<0.00146.049.9<0.0010.03
 % female51.958.00.0151.
 Race/Ethnicity (%)
  Non-Hispanic White73.286.7<0.00167.383.8<0.0010.06
  Non-Hispanic Black or African American11.95.411.95.7
  Other or multiple races4.
Marital status (%)
 divorced, separated, or widowed20.121.4<0.00120.323.4<0.0010.28
 never married24.315.126.217.5
Employment status (%)
 ever unemployed (or retired) during year?38.537.20.5542.240.50.320.24
Education (%)
 high school graduate or less70.967.766.659.6
 some college or associate’s degree15.417.20.2416.720.10.01<0.01
 bachelor s or graduate degree13.715.116.620.3
Health Insurance Coverage (%)
Health Status Measures
 “fair” or “poor” self-reported health status (%)21.810.9<0.00119.013.0<0.0010.17
 any self-reported limitaion (%)38.722.0<0.00141.726.4<0.0010.28
  any social limitation (%)<0.0010.23
  any work, school, or home limitation (%)12.86.6<0.00115.48.4<0.0010.14
  any limitation in physical functioning (%)16.78.3<0.00123.711.4<0.001<0.01
Abbreviations: MEPS, Medical Expenditure Panel Survey

aNo. of MEPS respondents includes adult (age ≥ 18 years) who were inscope and reported an ambulatory visit for primary ICD-9-CM condition related to spine conditions
bP-values compare those adults with Spine Conditions to those No Spine Conditions
bt-test used in comparison of means and χ2 statistic used in comparison of proportions