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

Table 6 Correlations (r) between Lordosis and PI for each group

Roussouly types	Level	r	p
Type I	L1–L2	0.4034	0.0521*
	L2–L3	0.4183	0.0325
	L3–L4	0.4978	0.0032
	L4–L5	0.5027	0.0195
	L5–S1	0.5321	< 0.0001
Type II	L1–L2	0.4327	0.0027
	L2–L3	0.4856	0.0019
	L3–L4	0.5154	0.0002
	L4–L5	0.5360	0.0002
	L5–S1	0.4859	0.0018
Type III	L1–L2	0.5017	< 0.0001
	L2–L3	0.5483	< 0.0001
	L3–L4	0.4892	< 0.0001
	L4–L5	0.6098	< 0.0001
	L5–S1	0.5709	< 0.0001
Type IV	L1–L2	0.4311	0.0527*
	L2–L3	0.5828	0.0078
	L3–L4	0.8619	< 0.0001
	L4–L5	0.8456	< 0.0001
	L5–S1	0.7389	< 0.0001

ISSN: 1749-799X