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Table 1 Selected characteristics of study population and a comparison of responders vs. non-responders

From: Oral vitamin B12therapy in the primary care setting: a qualitative and quantitative study of patient perspectives

  Responders n = 86 Non-responders n = 47 p-value
Mean age – Yr ± SD 72 ± 15 65 ± 20 0.03
Female sex – No. (%) 48 (56) 37 (79) 0.009
Level of education completed    
   High school or less 28 (33)   
   Some post-secondary education 21 (25)   
   Bachelors degree or more 35 (42)   
Annual household income    
   Less than $40K 40 (53)   
   $40–79K 20 (26)   
   $80K or greater 16 (21)   
Self-reported perception of health    
   Above average 25 (29)   
   Average 40 (47)   
   Below average 20 (24)   
Prescription medications taken    
   0 8 (10)   
   1 to 3 46 (55)   
   4 to 6 16 (19)   
   7 + 14 (17)   
Monthly episodes of forgetting medications    
   0 45 (54)   
   1–2 26 (31)   
   3+ 12 (14)   
Years on B12 therapy    
   0 to 2 19 (24)   
   3 to 5 25 (31)   
   6 to 10 17 (21)   
   11 to 19 13 (16)   
   20+ 6 (8)   
Frequency of B12 injections    
   Less than once monthly 9 (10)   
   Once monthly 74 (86)   
   More than once monthly 3 (3)   
Satisfaction with B12 injections    
   Satisfied 22 (26)   
   Neutral 59 (69)   
   Unsatisfied 5 (6)   
Monthly visits to doctor for other reasons    
   0 49 (60)   
   1 23 (28)   
   2 + 10 (12)   
Mode of travel to visit doctor    
   Personal vehicle 49 (58)   
   Public transit 23 (27)   
   Walk 9 (11)   
   Taxi 4 (5)   
Travel time to visit doctor    
   < 15 min 27 (32)   
   15–29 min 29 (35)   
   30–44 min 20 (24)   
   45–59 min 5 (6)   
   60+ min 3 (3)   
Patients at each study site    
   Sunnybrook Campus, SWCHSC* 51 (59)   
   Flemingdon Health Centre 19 (22)   
   Women's College Campus, SWCHSC* 16 (19)   
  1. * Sunnybrook and Women's College Health Sciences Centre