“…Thirteen multisite studies reporting results were identified; of these, three studies are currently in progress. Six studies focused on heart disease (O'Connor et al 1996a;Krall, Reese, and Donahue 1995;Philbin et al 1996;Meehan et al 1996;Mitchell et al 1996;Gordian and Ballard 1997). Other categories were examined as well: one looked into both hypertension and depression (Horowitz et al 1996;Goldberg et al 1998); one, adverse drug events (Leape et al 1995); one, cystitis (O'Connor et al 1996b); one, pediatric immunization rates (Carlin, Carlson, and Nordin 1996); and, finally, one took on six conditions: acute myocardial infarction, COPD, congestive heart failure, pneumonia, stroke, and total hip replacement (Shortell et al 1995b).…”