Assessment of nasal base morphology using new proportion indices in Chinese

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Table 2 Comparison between control group (n = 101) and preoperative parameters in surgical group (n = 54)

Index	Control	Preoperative	t	P
Index	\( \bar{x} \pm s \)	\( \bar{x} \pm s \)	t	P
1 sn-prn	1.93 ± 0.20	1.84 ± 0.22	2.473	0.014*
2 c-sn	0.90 ± 0.13	0.84 ± 0.15	2.728	0.007*
3 all-alr	3.74 ± 0.37	3.62 ± 0.26	2.026	0.044*
4 inter-alar angle	89.66 ± 8.53	91.22 ± 11.18	−0.896	0.373
5 inter-axial angle	78.09 ± 11.39	74.99 ± 13.85	1.493	0.137
6 sn-prn/all-alr	0.52 ± 0.07	0.51 ± 0.55	0.926	0.356
7 c-prn/a	0.33 ± 0.05	0.32 ± 0.04	0.253	0.800
8 c-sn/all-alr	0.25 ± 0.04	0.23 ± 0.04	3.102	0.002*