Niederman R, Sullivan T M, Weiss D, Morhart R, Robbins W, Maier D
J Periodontol. 1981 Mar;52(3):150-4. doi: 10.1902/jop.1981.52.3.150.
The utility of any index depends on its validity, reliability, and administrative feasibility. The Oral Hygiene Skill Achievement Index (S.A.I.) was found to be a valid measure of oral hygiene skill in that registered dental hygienists received greater than 90% of the total possible points. The S.A.I. was found to have an initial reliability of r greater than or equal to 0.91 and a repeat reliability of r greater than or equal to 0.96. The S.A.I. requires less than 10 minutes to administer, 40 minutes to teach, and 1 hour and 40 minutes to learn. The results suggest that S.A.I. should be a useful instrument for both clinical and research use.
任何指数的效用都取决于其有效性、可靠性和管理可行性。口腔卫生技能成就指数（S.A.I.）被发现是口腔卫生技能的有效衡量指标，因为注册牙科保健员获得了总分的90%以上。S.A.I.的初始可靠性为r大于或等于0.91，重复可靠性为r大于或等于0.96。实施S.A.I.所需时间少于10分钟，教学时间为40分钟，学习时间为1小时40分钟。结果表明，S.A.I.应该是一种对临床和研究都有用的工具。
