Noninvasive Characterisation of Foot Reflexology Areas by Swept Source-Optical Coherence Tomography in Patients with Low Back Pain

Table 3

Comparison of the thickness of stratum corneum.

Grade	Gender				𝑃 value; (in between male and female SS-OCT images)
	Male		Female
	Sample size of image data (𝑛)	Thickness of stratum corneum (μm); Median (range)^†	Sample size of image data (𝑛)	Thickness of stratum corneum (μm); Median (range)^†
Grade 0	300	44.8; (37.9–53.9)	325	41.7; (31.6–51.0)	0.001
Grade 1	250	44.2; (28.7–54.7)	500	40.0; (34.1–49.2)	0.001
Grade 2	450	35.2; (23.6–45.9)	650	25.7; (17.3–39.6)	0.009
Grade 3	275	18.5; (10.5–22.3)	400	11.2; (6.0–17.7)	0.023
Overall 𝑃 value		0.001		0.001
Post hoc multiple grade comparison
0 versus 1		0.363		0.679
0 versus 2		0.003		0.001
0 versus 3		0.001		0.001
1 versus 2		0.109		0.001
1 versus 3		0.004		0.001
2 versus 3		0.008		0.001

 ^†Values are expressed as median (minimum–maximum).