MEMORANDUM OPINION
1 1 Original jurisdiction is assumed. Okla. Const. Art. 7 § 4. Real Parties in Interest (Third-Party Plaintiffs or Plaintiffs) were granted, in part, a motion to compel discovery. The order of the District Court requires Defendant and Petitioner (Farmers Insurance Co.) to search claim files for the years 2000, 2001 and 2002 to determine those that contain complaints from Oklahoma insureds on med-pay claims. Farmers seeks to prohibit enforcement of that order.
1 2 Evidence submitted by Farmers shows that compliance with the order would require Farmers to manually examine approximately 600,000 closed files located in a Kansas storage facility. Farmers estimated that it would take a staff of thirty people working two months to review these files. Farmers currently employs a retrieval staff of six people for all of the retrieval needs of its business. After October 2001 Farmers used an electronic method for storing files, and provided to Plaintiffs a list of approximately 3300-3400 claims (approximately 70 pages with approximately 48 claims per page) that arose from accidents occurring in Oklahoma prior to January 1, 2008. The evidence shows that compliance with the order requires an employee to examine all 3800-3400 electronic files, and this task may take thirty minutes for each file.
T3 Discovery may be limited or denied when discoverable material is sought in an excessively burdensome manner. YWCA of Oklahoma City v. Melson,
T4 Plaintiffs asserts that the material is sought for the purpose of their theory that *661 Farmers engaged in a pattern of conduct that was wrongful as it relates to med-pay claims. Statistical sampling is a common technique used to determine a pattern of conduct.
Statistical protocols represent standards for determining whether and under what cireumstances it is reasonable to extrapolate from a known universe to an unknown one. See Kaye & Freedman, Reference Guide on Statistics, Federal Judicial Center's Reference Manual on Scientific Evidence 382 (1994). They draw on probability theory to determine whether the observed variations likely depend upon chance, or whether they likely represent a pattern of intentional conduct.
U.S. v. Skodnek,
For example, in the context of the federal government seeking recoupment of Medicare overpayments involving a large number of patient files, one court said that "courts have routinely permitted the use of statistical sampling to determine whether there has been a pattern of overpayments spanning a large number of claims where case-by-case review would be too costly." Chaves County Home Health Service, Inc. v. Sullivan,
15 Permissible inferences from particular statistical methods depend upon the appropriateness of a particular statistical method in a given set of circumstances. For example, the High Court has said that: "We caution only that statistics are not irrefutable; they come in infinite variety and, like any other kind of evidence, they may be rebutted. In short, their usefulness depends on all of the surrounding facts and circumstances." International Broth. of Teamsters v. U.S.,
T6 In Christian v. Gray,
T7 The parties in the case today do not discuss either the varying methods of selecting particular files for sampling or the proper discoverable information in those files that would necessarily support the litigation objective of Plaintiffs. They may, or may not, agree to a particular method. No authority is cited in support of placing a burden on the trial court to create, sua sponte, a statistical sampling discovery technique for parties. We decline to hypothesize on the specific parameters of a discovery request that uses statistical sampling prior to the parties addressing the issue in the District Court.
T8 The trial court's order of June 10, 20083, required Farmers to comply with discovery. The trial court denied, by order dated July 11, 2008, Farmers' motion for a protective order. A trial court's abuse of discretion in denying a discovery protective order may be corrected by an extraordinary writ issued by this Court. Inhofe v. Wiseman,
19 We hereby direct that the District Court's orders of June 10, 2003, and July 11, 2008, in Cause CS-2002-4453, District Court of Tulsa County, shall not be enforced to the *662 extent that they require Farmers to search all of its files for the three-year period and identify those in which a complaint by an Oklahoma insured was made concerning a med-pay claim. The extent to which Plaintiffs may obtain information from Farmers' files by discovery, using a workable statistical sampling technique which would meet the trial court's muster for integrity of the process and protect both litigants from distor-tive effects, is left for the parties to litigate in the District Court. WRIT ISSUED.
