Table 1.
Selected characteristics of study population and a comparison of responders vs. non-responders
| 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) |
* Sunnybrook and Women's College Health Sciences Centre