Table 2.

Overall (A) and c₃ of (B) vessel density of deep capillary plexus (DCP) of patients_post−COVID who were hospitalized and non-hospitalized during COVID-19 infection: (A) mixed model analysis showed a significantly reduced overall LS-mean vessel density (VD) for hospitalized (coded as 1) compared with non-hospitalized patients (coded as 0); (B) general linear model (non-hospitalized, hospitalized patients_post−COVID and controls) showed a significantly reduced VD of c₃ of DCP for hospitalized < non-hospitalized < controls.

(A)
Type 3 tests of fixed effects of vessel density of DCP
Effect	Num DF	Den DF	F value	Pr > F
Hospitalized	1	29	5.18	0.0304
Gender	1	29	2.58	0.1188
Age	1	29	0.06	0.8099
Sector	11	352	2.92	0.001
Least squares means of vessel density of DCP
Effect	Groups	Estimate	Standard error	DF	t	Pr > |t|	Alpha	Lower	Upper
Hospitalized	0	24.23	0.8928	29	27.14	<0.0001	0.05	22.404	26.06
Hospitalized	1	21.003	0.9006	29	23.32	<0.0001	0.05	19.161	22.85
Differences of least squares means of vessel density of DCP
Effect	Group	Group	Estimate	Standard Err.	DF	t Value	Pr > |t|	Adj p	Alpha	Lower	Upper	Adj lower	Adj Upper
Hospitalized	0	1	3.23	1.42	29	2.28	0.03	0.03	0.05	0.33	6.13	0.33	6.13
(B)
Least squares means of c3 of DCP for effect groups
t for H0: LS-mean(i) = LS-mean(j)/Pr > |t|
Dependent Variable: c3 of DCP
i/j	Non-hospitalized	Hospitalized	Control
Non-hospitalized		2.822824	0.124304
		0.0178	0.9915
Hospitalized	−2.82282		−2.72584
	0.0178		0.0229
Control	−0.1243	2.725835
	0.9915	0.0229