. 2018 Aug 30;4(8):e00758. doi: 10.1016/j.heliyon.2018.e00758

Table 4.

Indices of tissue oximetry and microcirculation of the facial skin in patients with varying degrees of involutional changes in the facial skin system.

Factor	I grade (n = 20)	II grade (n = 29)	III grade (n = 35)	Р (Kruskal-Wallis)
LDF, ml/min	7.7 [5.4; 9.0]^∗^,^1/3	7.1 [5.2; 8.1]	6.4 [5.0; 7.8]^∗^,^1/3	0.019*
TcpO₂, mm Hg	47 [41; 57]^∗^,^1/3	40 [34; 49]	34 [30; 41]^∗^,^1/3	0.010*

Note: statistical results are presented in the form of the following data: the first line is the median (Me), the second line is the lower and upper quartiles [Quartile 25%; Quartile 75%].

*p < 0.05 – significant intergroup difference. Comparison of 3 independent groups according to the Kruskal-Wallis test; comparison of 2 groups – according to the Mann-Whitney test (^1/2 I and II degrees, ^1/3 I and III degrees; ^2/3 II and III degrees).