Postprandial Glucose Levels Are Better Associated with the Risk Factors for Diabetes Compared to Fasting Glucose and Glycosylated Hemoglobin (HbA1c) Levels in Elderly Prediabetics: Beneficial Effects of Polyherbal Supplements—A Randomized, Double-Blind, Placebo Controlled Trial

Table 4

Differences in HbA1c levels (%) between the GlucoVita and placebo subgroups stratified by age, BMI, and metabolic symptoms.

Subgroups	Treatment	Preintervention	Postintervention	Change in Value
Total
	GlucoVita (N=43)	5.85±0.41	5.81±0.49	0.05±0.31
	Placebo (N=45)	5.92±0.42	6.00±0.51	-0.08±0.36
	t	-0.76	-1.80	1.73
	P	0.45	0.08	0.09
AGE
Age<=65yrs	GlucoVita (N=31)	5.85±0.37	5.73±0.43	0.12±0.28^+
	Placebo (N=30)	5.89±0.39	5.96±0.48	-0.07±0.41
	t	-0.36	-1.92	2.10
	P	0.72	0.06	0.04
Age>65yrs	GlucoVita (N=12)	5.86±0.51	6.00±0.58	-0.14±0.31
	Placebo (N=15)	5.99±0.47	6.08±0.57	-0.09±0.23
	t	-0.68	-0.36	-0.46
	P	0.50	0.72	0.65
SYMPTOMS
No	GlucoVita (N=23)	5.80±0.37	5.73±0.45^+	0.07±0.30^+
	Placebo (N=24)	5.89±0.43	6.04±0.52	-0.15±0.33
	t	-0.78	-2.14	2.29
	P	0.44	0.04	0.03
YES	GlucoVita (N=20)	5.92±0.45	5.89±0.53	0.02±0.33
	Placebo (N=21)	5.95±0.41	5.95±0.51	0.00±0.38
	t	-0.28	-0.39	0.22
	P	0.78	0.70	0.82
BMI
Normal	GlucoVita (N=13)	5.86±0.39	5.82±0.43	0.04±0.32
	Placebo (N=12)	5.98±0.38	6.03±0.62	-0.06±0.30
	t	-0.74	-0.99	0.78
	P	0.47	0.33	0.44
Overweight	GlucoVita (N=20)	5.75±0.38	5.65±0.37	0.10±0.29
	Placebo (N=22)	5.75±0.36	5.84±0.37	-0.09±0.25
	t	0.00	-1.62	2.22
	P	1.00	0.11	0.03
Obese	GlucoVita (N=10)	6.06±0.44	6.10±0.64	-0.04±0.35
	Placebo (N=11)	6.21±0.42	6.28±0.53	-0.07±0.58
	t	-0.79	-0.71	0.15
	P	0.44	0.49	0.88
FG
Normal	GlucoVita (N=16)	5.73±0.47	5.73±0.53	-0.01±0.32
	Placebo (N=12)	5.68±0.26	5.60±0.27	0.07±0.24
	t	0.36	0.78	-0.75
	P	0.72	0.44	0.46
Impaired	GlucoVita (N=27)	5.93±0.35	5.85±0.46^+	0.08±0.31^+
	Placebo (N=33)	6.01±0.43	6.14±0.5	-0.13±0.38
	t	-0.77	-2.32	2.31
	P	0.44	0.02	0.02
2h-PG
Normal	GlucoVita (N=16)	5.86±0.36	5.74±0.41	0.12±0.34^+
	Placebo (N=16)	5.84±0.29	5.99±0.36	-0.15±0.32
	t	0.16	-1.83	2.30
	P	0.87	0.08	0.03
Impaired	GlucoVita (N=27)	5.85±0.44	5.85±0.53	0.00±0.29
	Placebo (N=29)	5.97±0.47	6.00±0.58	-0.04±0.38
	t	-0.93	-1.04	0.46
	P	0.36	0.30	0.65

, P<0.05 within-group comparison: preintervention versus postintervention.
⁺, P<0.05 between-group comparison.