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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: J Pediatr. 2019 Mar 8;209:130–133. doi: 10.1016/j.jpeds.2019.01.035

Table 2.

Frequency of Severe Symptoms/Signs by Case Definition Criteria for CFS.

Symptom Participants who did not meet case definition criteria Participants diagnosed by 1 criterion Participants diagnosed by > 1 criteria χ2(df) p
GI symptoms 26.5% (9) 22.2% (4) 75.0% (6) 8.11 (2) .01
Hematologic complications 26.5% (9) 16.7% (5) 12.5% (1) 0.90 (2) .30
Trouble breathing/pulmonary complications 2.9% (1) 11.1% (2) 25.0% (2) 4.32 (2) .035
Tender, enlarged spleen 2.9% (1) 5.6% (1) 0.0% (0) 0.57 (2) .50