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Table 2 Left Atrial Cross-Sectional Areas and Lengths

From: Reference values for left atrial size by cardiovascular magnetic resonance in the Framingham Heart Study Offspring cohort

Mean±SD [95%UL]

Men, N=257

Women, N=375

Men vs. Women

4-ch area, cm2

20.6±4.1 [27.6]

18.9±4.0 [25.6]

P<0.001

2-ch area, cm2

21.3±4.6 [29.2]

18.4±4.1 [24.3]

P<0.001

4-ch length, mm

50.8±7.1 [62.9]

49.2±6.5 [60.1]

P=0.004

2-ch length, mm

50.8±6.9 [62.2]

47.4±6.8 [58.1]

P<0.001