Association between plant-based dietary pattern and biological aging trajectory in a large prospective cohort

Table 2 Associations between quintiles of PDI, hPDI, and uPDI and aging trajectories based on multinomial logistic regression model

Diet index	Median of diet index	Medium-degree vs slow aging			High-degree vs slow aging
Diet index	Median of diet index	N^a	OR (95% CI)	p-trend	N^a	OR (95% CI)	p-trend
Quintile of PDI (N)
Q1 (2402)	36	1241	Ref	< 0.0001	145	Ref	0.0050
Q2 (2038)	39	969	0.89 (0.77, 1.03)		96	0.67 (0.49, 0.92)
Q3 (2072)	40	938	0.78 (0.68, 0.90)		93	0.67 (0.50, 0.91)
Q4 (1753)	42	723	0.69 (0.59, 0.79)		71	0.62 (0.45, 0.86)
Q5 (1926)	45	822	0.75 (0.65, 0.86)		89	0.63 (0.46, 0.86)
Per 10, unit increment of PDI			0.74 (0.66, 0.84)			0.70 (0.53, 0.92)
Quintile of hPDI (N)
Q1 (2080)	45	1053	Ref	< 0.0001	118	Ref	0.0004
Q2 (1787)	48	869	0.88 (0.77, 1.01)		92	0.79 (0.59, 1.06)
Q3 (2144)	49	956	0.76 (0.64, 0.90)		99	0.62 (0.42, 0.91)
Q4 (1981)	51	874	0.71 (0.62, 0.81)		85	0.58 (0.43, 0.78)
Q5 (2199)	54	941	0.73 (0.62, 0.85)		100	0.62 (0.44, 0.88)
Per 10, unit increment of hPDI			0.73 (0.65, 0.82)			0.65 (0.50, 0.85)
Quintile of uPDI (N)
Q1 (1851)	41	733	Ref	< 0.0001	78	Ref	0.0114
Q2 (2059)	45	888	1.11 (0.97, 1.28)		109	1.27 (0.92, 1.74)
Q3 (1809)	47	824	1.18 (1.02, 1.36)		72	0.93 (0.65, 1.31)
Q4 (2316)	50	1095	1.27 (1.11, 1.45)		114	1.24 (0.90, 1.70)
Q5 (2156)	53	1153	1.72 (1.48, 1.99)		121	1.70 (1.21, 2.38)
Per 10, unit increment of uPDI			1.43 (1.30, 1.58)			1.39 (1.11, 1.75)

Slow aging: slow aging trajectory, Medium-degree: medium-degree accelerated aging trajectory, High-degree: high-degree accelerated aging trajectory. N^a: Number of participants in medium-degree accelerated aging trajectory or high-degree accelerated aging trajectory. Model adjusted for age, gender, education level, marital status, smoking status, drinking status, and chronic disease count

ISSN: 1741-7015