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Table 5 Correlations (r) between IDH and PI for each group

From: Correlation between lumbar intervertebral disc height and lumbar spine sagittal alignment among asymptomatic Asian young adults

Roussouly types Level r p
Type I L1–L2 0.4266 0.0133
L2–L3 0.3992 0.0214
L3–L4 0.5033 0.0028
L4–L5 0.4008 0.0208
L5–S1 0.4855 0.0042
Type II L1–L2 0.4429 0.0016
L2–L3 0.4907 0.0004
L3–L4 0.5081 0.0002
L4–L5 0.4960 0.0003
L5–S1 0.4360 0.0020
Type III L1–L2 0.4989 < 0.0001
L2–L3 0.5396 < 0.0001
L3–L4 0.4683 < 0.0001
L4–L5 0.5928 < 0.0001
L5–S1 0.5203 < 0.0001
Type IV L1–L2 0.4220 0.0504*
L2–L3 0.5656 0.0061
L3–L4 0.7636 < 0.000
L4–L5 0.7645 < 0.000
L5–S1 0.6438 0.0012
  1. *There was no statistically significant correlation (p > 0.05)