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. 2020 May 1;6:18. doi: 10.1186/s40900-020-00196-4

Table 2.

SMARTER participant characteristics in each activity

Participant characteristics (n[%]) Crowd-voting Focus group Delphi survey p-value
N 38 39 74
Age (mean [SDa])b 74.03 (3.81) 75.14 (4.29) 77.19 (6.13) 0.03
Sex
 Female 18 (50%) 27 (71%) 44 (61%)
 Not reported 2 1 2
Racec 0.18
 Black or African American 2 (6%) 9 (26%) 8 (11%)
 Native American Indian or Alaska Native 1 (3%) 0 (0%) 0 (0%)
 Native Hawaiian or other Pacific Islander 1 (3%) 0 (0%) 0 (0%)
 Asian 2 (6%) 3 (9%) 2 (3%)
 White 30 (83%) 22 (65%) 60 (83%)
 Other 0 (0%) 0 (0%) 2 (3%)
 Multiple races 0 (0%) 0 (0%) 0 (0%)
 Not reported 2 5 2
Hispanic ethnicity 0.45
 Hispanic 0 (0%) 1 (3%) 4 (6%)
 Not reported 3 5 3
Educationd 0.04
 Less than high school graduate 1 (1%) 0 (0%) 1 (1%)
 High school graduate or obtained general equivalent diploma 1 (3%) 4 (11%) 8 (11%)
 Associate’s degree 1 (3%) 3 () 6 (8%)
 Some college 6 (16%) 8 (21%) 19 (26%)
 Four-year college graduate 10 (27%) 10 (26%) 15 (20%)
 Professional or graduate degree 19 (51%) 13 (34%) 25 (34%)
 Not reported 1 1 0
Marital statuse 0.77
 Married 20 (54%) 17 (46%) 38 (51%)
 Living with partner 1 (3%) 3 (8%) 2 (3%)
 Divorced 6 (16%) 8 (22) 11 (15%)
 Separated 1 (3%) 0 (0%) 0 (0%)
 Never married 1 (3%) 1 (3%) 2 (3%)
 Widowed 8 (22%) 8 (22%) 21 (28%)
 Not reported 1 2 0
How long has low back pain been an ongoing problem for you?f 0.11
 3–6 months 1 (3%) 0 (0%) 1 (1%)
 6 months-1 year 0 (0%) 2 (5%) 2 (3%)
 1–5 years 9 (24%) 13 (34%) 30 (43%)
 More than 5 years 28 (74%) 23 (61%) 37 (53%)
 Not reported 0 1 4
How often has low back pain been an ongoing problem for you over the past 6 months?g 0.60
 Less than half the days in the past 6 months 21 (55%) 14 (37%) 34 (47%)
 At least half the days in the past 6 months 6 (16%) 10 (26%) 15 (21%)
 Every day or nearly every day in the past 6 months 11 (29%) 14 (37%) 23 (32%)
 Not reported 0 1 2
In the past 7 days, how would you rate your low back pain on average? (mean [SD]) 3.9 (1.82) 4.8 (2.33) 4.2 (2.13) 0.21

Notes: a) SD = standard deviation; b) 1 participant in the Delphi survey and 2 participants in the focus group activity were missing data on age; c) p-value for race determined from Chi-square test of white or Caucasian vs. any other race; d) p-value for education determined from Chi-square test of four-year college graduate or more vs. less than four-year college graduate; e) p-value for marital status determined from Chi-square test of married vs. any other status; f) p-value for “how long has low back pain been an ongoing problem for you?” determined from Chi-square test of more than 5 years vs. any other status; g) p-value for “how often has low back pain been an ongoing problem for you over the past 6 months?” determined from Chi-square test of all categories