library/classes/rulesets/Cqm/reports/NFQ_0028a/Numerator.php

   1 <?php
   2 // Copyright (C) 2011 Ken Chapple <ken@mi-squared.com>
   3 //
   4 // This program is free software; you can redistribute it and/or
   5 // modify it under the terms of the GNU General Public License
   6 // as published by the Free Software Foundation; either version 2
   7 // of the License, or (at your option) any later version.
   8 //
   9 class NFQ_0028a_Numerator implements CqmFilterIF
  10 {
  11     public function getTitle()
  12     {
  13         return "Numerator";
  14     }
  15
  16     public function test(CqmPatient $patient, $beginDate, $endDate)
  17     {
  18         // See if user has been a tobacco user before or simultaneosly to the encounter within two years (24 months)
  19         foreach ($this->getApplicableEncounters() as $encType) {
  20             $dates = Helper::fetchEncounterDates($encType, $patient, $beginDate, $endDate);
  21             foreach ($dates as $date) {
  22                 // encounters time stamp is always 00:00:00, so change it to 23:59:59 or 00:00:00 as applicable
  23                 $date = date('Y-m-d 23:59:59', strtotime($date));
  24                 $beginMinus24Months = strtotime('-24 month', strtotime($date));
  25                 $beginMinus24Months = date('Y-m-d 00:00:00', $beginMinus24Months);
  26                 // this is basically a check to see if the patient's tobacco status has been evaluated in the two years previous to encounter.
  27                 if (Helper::check(ClinicalType::CHARACTERISTIC, Characteristic::TOBACCO_USER, $patient, $beginMinus24Months, $date) ||
  28                     Helper::check(ClinicalType::CHARACTERISTIC, Characteristic::TOBACCO_NON_USER, $patient, $beginMinus24Months, $date) ) {
  29                     return true;
  30                 }
  31             }
  32         }
  33
  34         return false;
  35     }
  36
  37     private function getApplicableEncounters()
  38     {
  39         return array(
  40             Encounter::ENC_OFF_VIS,
  41             Encounter::ENC_HEA_AND_BEH,
  42             Encounter::ENC_OCC_THER,
  43             Encounter::ENC_PSYCH_AND_PSYCH,
  44             Encounter::ENC_PRE_MED_SER_18_OLDER,
  45             Encounter::ENC_PRE_IND_COUNSEL,
  46             Encounter::ENC_PRE_MED_GROUP_COUNSEL,
  47             Encounter::ENC_PRE_MED_OTHER_SERV );
  48     }
  49 }