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Table 2 Comparison of the pedigree symbols used

From: f-treeGC: a questionnaire-based family tree-creation software for genetic counseling and genome cohort studies

Pedigree software packages f-treeGC PedigreeXP Progeny Free Online Pedigree Tool Genial Pedigree Draw My Family Health Portrait
Version 1.01 2.1.0.169 Not described 2.0 3.4
Standard pedigree symbolsa
 Name of proband/consultand Yes Yes Yes Yes No
 Family names Yes Yes Yes Yes Yes
 Historian Yesb No Yesb No No
 Date of intake/update Yes No No No Yes
 Reason for taking pedigree Yesb No Yesb No No
 Ancestry of both sides of the family Yes Yes Yes Yes No
 Age Yes Yes Yes Yes No
 Generation numbered with Roman numerals I, II, III, etc. Yes Yes Yesb Yesb No
 Individual numbered 1, 2, 3, etc. Yes Yes Yesb Yesb No
 Individual Yes Yes Yes Yes Yes
 Affected individual Yes Yes Yesd Yes Yes
 Affected individual (> one condition) Yesc Yesc,d Yes Yes No
 Multiple individuals, number known Yes Yes Yes Yes No
 Multiple individuals, number unknown Yes Yes Yes Yes No
 Deceased individual Yes Yes Yes Yes Yes
 Consultand Yes No No Yes No
 Proband Yes Yesd Yesd Yes No
 Stillbirth (SB) Yesb No No No No
 Pregnancy (P) Yes Yes Yes Yes No
 Spontaneous abortion (SAB) Yes Yes Yesd Yes No
 Affected SAB Yes Yes Yesd No No
 Termination of pregnancy (TOP) Yes Yes No Yes No
 Affected TOP Yes Yes No No No
 Ectopic pregnancy Yesb Yesb No Yes No
 Relationship line Yes Yes Yes Yes Yes
 A break in relationship line Yes Yes Yes Yes No
 Divorced partner Yese Yes Yes Yes No
 Consanguinity Yes Yes Yes Yes No
 Multiple gestation, monozygotic Yes Yes Yes Yes No
 Multiple gestation, dizygotic Yes Yes Yes Yes No
 Multiple gestation, unknown Yesb No Yesb No No
 Multiple gestation, trizygotic Yes Yes Yes Yes No
 Family history not available/known for individual Yes No No No No
 No children by choice or reason unknown Yes No Yes Yesd No
 Infertility Yes No Yes Yesd No
 Adoption Yes Yes Yes Yes Yesd
 Ovum or sperm donor Yes No No Yes No
 Surrogate (gestational carrier) Yes No No Yes No
 Evaluation Yesb Yesb Yes Yesb No
 Carrier Yes Yesd Yesf Yes No
 Asymptomatic/presymptomatic carrier Yes No No Yes No
 Uninformative study Yesb Yesb Yesb Yesb No
 Affected individual with positive evaluation Yesb Yesb Yes Yesb No
  1. aBennett et al., 2008 [2]
  2. bBy using “Remarks”, “Comment”, “Notes”, or “Annotated Text”
  3. cUp to four conditions
  4. dDifferent symbols used from the recommended common pedigree symbols
  5. eLimited to three individuals (consultand couple with children, or parents of consultand without children)
  6. fBy using “Apply symbols”