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Table 3 Cortical surface area in quadrilateral, thin cortical thickness region for different age groups [mean (95% CI)]

From: Differences in fixation to young and elderly quadrilateral surfaces with anatomic quadrilateral surface plate (AQSP) based on cortical thickness morphological results

Groups (m/f)

QSA (mm2)

TCTRA (mm2)

Ratio (%)

18–40 (m = 31; f = 9)

3512.65 (3351.42, 3673.87)

613.53 (529.20, 697.87)

17.67 (15.26, 20.08)

41–60 (m = 54; f = 17)

3537.25 (3433.60, 3640.90)

635.59 (587.74, 683.44)

18.37 (16.77, 19.96)

Above 60 (m = 25; f = 13)

3367.04 (3177.46, 3556.61)

763.78 (645.57, 881.98)

23.03 (19.68, 26.38)

  1. QSA means quadrilateral surface area, TCTRA means thin cortical thickness region area, Ratio TCTRA/QSA