| Methods |
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| Data
Collection |
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| Mail
survey of representative samples of |
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| dental
general practitioners and |
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| periodontists
in the northeastern USA |
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| Sample = 360 Responses = 208 |
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| Ineligible = 86
( GP = 105) |
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| Eligible = 274
(Perio =
103) |
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| Overall response rate = 76% |
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| 32 |