Table 4.

Differences between inter-observers for vertebra L4 and L5, including the inter-observer correlation coefficient, given as mean value per observer and p value between both observers

Observer	L4		L5
	Mean obs	Correlation coefficient r (p value)	Mean obs	Correlation coefficient r (p value)
1–2	0.34–0.39	0.97 (<0.01)	0.34–0.38	0.97 (<0.01)
2–3	0.39–0.35	0.96 (<0.01)	0.38–0.35	0.98 (<0.01)
3–1	0.35–0.34	0.98 (<0.01)	0.35–0.34	0.98 (<0.01)