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Completeness of Response (%a) to the Paper and Web Questionnaires During the 2003, 2005, and 2007 Follow-Up Cycles, Black Women's Health Study, 2003–2008
| 2003–2004 |
2005–2006 |
2007–2008 |
||||
| Paper (n = 41,436) | Web (n = 4,683) | Paper (n = 36,041) | Web (n = 7,135) | Paper (n = 36,203) | Web (n = 8,925) | |
| Completed all questions | 45.6 | 81.8 | 35.1 | 86.0 | 46.3 | 96.8 |
| Missed 1 question | 28.1 | 14.5 | 30.5 | 10.8 | 24.6 | 2.0 |
| Missed ≥2 questions | 26.3 | 3.7 | 34.4 | 3.2 | 29.1 | 1.2 |
Age-standardized.
