Table 1.
Numbers who returned valid and invalid questionnaire scores at different time points during the SPHERE Study
| Total questionnaires returned | ||
|---|---|---|
| Valid scores | Invalid scores | |
| N (%) | N (%) | |
| Godin | ||
| Baseline* | 541 (59.1) | 362 (40.9) |
| Follow-up** | 523 (62.9) | 309 (37.1) |
| DINE fibre | ||
| Baseline* | 861 (95.4) | 42 (4.6) |
| Follow-up** | 716 (86.1) | 116 (13.9) |
| DINE total fat | ||
| Baseline* | 814 (90.1) | 89 (9.90) |
| Follow-up** | 673 (80.9) | 159 (19.1) |
*Baseline total N = 903; **Follow-up N = 832; 71 lost to follow-up due to: death; withdrawn consent; left practice; too ill; too busy; admitted to nursing home (44 intervention; 27 control).