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. Author manuscript; available in PMC: 2024 Sep 1.
Published in final edited form as: Am J Gastroenterol. 2023 Apr 11;118(9):1648–1655. doi: 10.14309/ajg.0000000000002280

Table 2.

Global Characteristics of the Estimated Networks and Network Comparison Results by Age Group

All
participants
(n=355)
Older participants
(n=147)
Young
participants
(n=208)
Network1 vs. 2 Network
1 vs. 3
Network
2 vs. 3

Global strength 13.38 12.74 12.74
Top 5 most central nodes (strength centrality) Fati (2.23) Fati (2.23) Fati (2.04)
Anx (1.66) HardConc (1.70) Anx (2.01)
AbdPn (1.26) AbdPn (1.26) AbdPn (1.19)
Gas (1.25) Gas (1.21) Bloat (1.15)
HardConc (0.87) Anx (1.08) Gas (0.96)
NCT results
Omnibus test of network structure invariance p-value ~ 1.000 0.979 0.867
Global strength invariance test p-value 0.471 0.356 0.907

Note See Table 1 for symptom abbreviation; NCT = network comparison test; Network 1 = all participants; Network 2 = older (> 45 years) participants; Network 3 = young (≤ 45 years) participants.