Table 5. Comparison between groups by slipped segment ($\overline{x}\pm s$).

Measurement	L4 (n=74)					L5 (n=30)
	PI (°)	PT (°)	SS (°)	LL (°)		PI (°)	PT (°)	SS (°)	LL (°)
Standing	57.55±11.439	21.60±8.855	35.96±8.551	48.95±12.242		60.91±14.979	19.17±9.382	41.80±13.137	53.53±14.642
Supine	55.12±11.206	14.42±7.622	40.69±8.524	50.18±11.263		58.14±13.379	13.21±7.530	44.94±10.656	52.53±13.120
t value	4.343	11.058	−6.024	−1.398		3.210	5.933	−2.710	0.782
P value	<0.001	<0.001	<0.001	0.166		0.003	<0.001	0.011	0.440

Paired t-test, P<0.05. LL, lumbar lordosis; PI, pelvic incidence; PT, pelvic tilt; SS, sacral slope.