Completers (n= 31) Non-completers (n = 22) p-value
Age 69.1 68.1 0.690
% female 81% 77% 0.771
Education – mean yrs 15.2 15.1 0.935
Race/ethnicity (n)     0.083*
African-American 0 1  
White (non-hispanic) 24 11  
Hispanic 7 10  
Income (n)     0.286
$0-19K 7 8  
$20-39K 10 8  
$40-59K 5 5  
$60-99K 7 1  
$100K+ 1 0  
Marital Status (n)     0.245
Single/never married 1 1  
Married/permanent 21 9  
Separated/divorced 6 8  
Widowed 2 4  
Health variables (means)      
CESD - depression 7.35 6.47 0.584
Pain - total 56.4 46.1 0.127
Pain - average 4.20 2.86 0.060*
Pain - discomfort 3.42 2.77 0.059*
Pain - duration 3.90 3.36 0.251
Pain - frequency 4.00 3.67 0.501
Pain - worst 5.20 3.64 0.078*
Fatigue 3.90 3.14 0.294
HAQ - disability 0.32 0.40 0.569
EQ5D - QOL Index 0.78 0.78 1.000
Self-rated health 68.86 71.09 0.739
Comorbidities 2.45 2.68 0.626
Table 3: Baseline characteristics of follow-up assessment completers and noncompleters