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Table 2 Reasons patients were not recruited to the pilot study

From: A pilot study evaluating the use of ABCD2 score in pre-hospital assessment of patients with suspected transient ischaemic attack: experience and lessons learned

Reason Month 1 Month 2 Month 3 Month 4
County A B A B A B A B
Ongoing symptoms 13 4 12 12 3 2 1/13 2
Prior stroke/TIAa 14 9 21 9 3 2 1/0b 1
Anticoagulantsa 11 4 7 6 5 2 3/1 1
Atrial fibrillationa 3 7 1 1 0 0 0/0 0
No consent returned 0 0 0 0 0 0 0/0 0
Patient declined 1 0 0 0 0 0 0/0 0
Not conveyed 4 4 0 1 2 1 0/0 0
Crew not trained 10 0 0 0 1 0 0/0 0
Not known 3 4 5 7 0 0 7/10 1
  1. County A—EMS crews trained, County B—EMS crews not trained, merely handing study packs to patients
  2. aExclusion criteria subject to substantial protocol amendment approved by ethics committee
  3. bDenotes numbers before and after study protocol amended to relax exclusion criteria