Table 5.

Safe depth of 28 chest acupoints in different BMI groups.

Points	Underweighta	Healthy weightb	Overweightc	Obesityd	P value1	P value2
	(n = 52)	(n = 186)	(n = 18)	(n = 30)
	Mean ± S.D.	Mean ± S.D.	Mean ± S.D.	Mean ± S.D.
CV22	20.98 ± 7.51	21.89 ± 6.29	25.83 ± 7.26	25.88 ± 8.93	0.002∗	0.007∗
CV21	5.72 ± 4.97	5.53 ± 3.65	6.00 ± 2.86	8.93 ± 8.21	0.027∗	0.012∗
CV20	5.40 ± 3.07	5.65 ± 2.81	7.33 ± 3.91	9.46 ± 7.65	0.002∗	<0.001∗
CV19	5.34 ± 2.63	5.58 ± 2.36	6.39 ± 2.41	9.02 ± 6.81	0.001∗	<0.001∗
CV18	5.70 ± 2.32	6.11 ± 4.51	6.80 ± 4.06	9.52 ± 6.55	0.003∗	0.001∗
CV17	5.92 ± 2.69	6.46 ± 3.89	8.30 ± 6.06	10.24 ± 7.52	0.005∗	<0.001∗
CV16	8.09 ± 3.29	9.04 ± 3.99	9.32 ± 3.74	13.79 ± 8.70	<0.001∗	<0.001∗
KI27	25.48 ± 7.48	26.31 ± 7.48	31.33 ± 10.32	32.98 ± 15.00	0.007∗	0.002∗
KI26	16.59 ± 6.50	16.67 ± 5.86	20.07 ± 6.48	21.24 ± 11.00	0.017∗	0.003∗
KI25	15.57 ± 5.50	15.66 ± 5.51	17.83 ± 5.21	19.62 ± 9.35	0.022∗	0.007∗
KI24	13.79 ± 4.89	14.24 ± 4.65	15.87 ± 4.40	19.57 ± 8.90	<0.001∗	<0.001∗
KI23	12.88 ± 4.24	13.29 ± 4.72	14.24 ± 4.24	18.58 ± 9.03	<0.001∗	<0.001∗
KI22	12.96 ± 4.10	13.46 ± 4.74	14.45 ± 4.31	18.04 ± 9.57	0.004∗	<0.001∗
ST13	31.53 ± 11.14	32.41 ± 11.88	37.98 ± 13.91	39.61 ± 21.21	0.060	0.047∗
ST14	20.73 ± 8.47	21.10 ± 8.39	24.28 ± 8.32	28.03 ± 16.11	0.015∗	0.004∗
ST15	17.12 ± 7.33	18.32 ± 7.69	21.43 ± 7.25	24.12 ± 14.23	0.012∗	0.003∗
ST16	14.81 ± 7.10	15.36 ± 6.97	17.31 ± 5.68	21.52 ± 12.23	0.004∗	<0.001∗
ST17	12.69 ± 5.11	13.30 ± 5.27	14.84 ± 4.41	20.04 ± 11.31	<0.001∗	<0.001∗
ST18	13.01 ± 4.80	13.04 ± 4.76	14.25 ± 3.26	18.17 ± 10.06	0.002∗	<0.001∗
LU2	35.68 ± 13.72	36.56 ± 15.63	45.77 ± 19.37	45.00 ± 23.25	0.036∗	0.016∗
LU1	23.37 ± 8.77	24.53 ± 9.38	29.66 ± 9.15	33.19 ± 17.92	0.002∗	<0.001∗
SP20	18.30 ± 8.22	19.38 ± 8.36	21.41 ± 7.09	26.73 ± 15.71	0.005∗	0.001∗
SP19	15.96 ± 7.02	16.68 ± 7.31	17.65 ± 5.28	22.41 ± 13.00	0.011∗	0.003∗
SP18	13.62 ± 5.15	14.45 ± 5.38	15.86 ± 4.44	19.88 ± 11.66	0.003∗	<0.001∗
SP17	12.22 ± 2.98	13.55 ± 3.58	14.74 ± 3.86	17.54 ± 10.71	0.008∗	<0.001∗
PC1	14.22 ± 5.01	14.53 ± 5.33	14.71 ± 4.23	19.84 ± 10.88	0.004∗	<0.001∗
GB23	14.64 ± 4.44	16.37 ± 5.15	19.80 ± 6.06	21.46 ± 11.28	0.001∗	<0.001∗
GB22	16.94 ± 6.85	18.64 ± 7.24	22.26 ± 7.86	24.15 ± 11.59	0.002∗	<0.001∗

The unit of mean ± S.D. is mm.

^∗Statistical significance.

^aUnderweight group: patients' BMI below the 5th percentile.

^bHealthy weight group: patients' BMI at or above the 5th percentile and below the 85th percentile.

^cOverweight group: patients' BMI at or above the 85th and below the 95th percentile.

^dObesity group: at or above the 95th percentile.

¹One-way ANOVA test or Brown-Forsythe test.

²Two-way ANOVA test, adjusted P value after controlling sex.