Baseline differences may impact on relationship between dietary tryptophan and risk of obesity and type 2 diabetes

doi:10.12998/wjcc.v10.i21.7617

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World Journal of Clinical Cases

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World J Clin Cases. Jul 26, 2022; 10(21): 7617-7619
Published online Jul 26, 2022. doi: 10.12998/wjcc.v10.i21.7617

Table 1 Baseline characteristics of study variables by tertiles of cumulative tryptophan intake in CHNS, 1997-2011[2]

Baseline variable	T1 (n = 2633)	T2 (n = 2642)	T3 (n = 2633)	P value
Age (yr)	43.884 (14.624)	43.196 (14.787)	43.338 (15.187)	0.207
Female, n (%)	1296 (49.221)	1338 (50.643)	1330 (50.513)	0.521
BMI (kg/m²)	22.818 (2.966)	22.344 (2.957)	21.668 (2.669)	< 0.001
WHR	0.852 (0.066)	0.847 (0.061)	0.845 (0.061)	< 0.001
PAL (MET-h/wk)	306.102 (185.951)	305.386 (183.797)	314.724 (178.567)	0.119
Energy intake (kcal/d)	2406.574 (730.597)	2279.742 (631.699)	2312.202 (619.281)	< 0.001
Protein intake (g/d)	75.854 (24.496)	68.007 (21.007)	63.132 (19.504)	< 0.001
Fat intake (g/d)	65.010 (37.716)	71.561 (36.944)	60.339 (32.443)	< 0.001
Carbohydrate intake (g/d)	376.755 (142.836)	337.802 (113.510)	375.947 (115.997)	< 0.001
SBP (mmHg)	120.945 (17.845)	118.362 (17.904)	116.824 (17.303)	< 0.001
DBP (mmHg)	78.296 (10.763)	77.051 (11.277)	75.871 (10.419)	< 0.001
Baseline tryptophan consumption (mg/g protein)	12.660 (0.972)	13.812 (1.018)	14.947 (1.216)	< 0.001
Living in city, n (%)	761 (28.902)	942 (35.655)	581 (22.066)	< 0.001
Urban index	51.952 (2.951)	52.032 (2.732)	51.797 (2.657)	0.008
Individual income (yuan)	6019.137 (6773.845)	6390.557 (5712.462)	5325.567 (5445.487)	< 0.001
High school education, n (%)	457 (17.357)	570 (21.575)	347 (13.179)	< 0.001
Smoking, n (%)	886 (33.650)	889 (33.649)	853 (32.397)	0.537
Drinking, n (%)	1008 (38.283)	995 (37.661)	903 (34.295)	0.005
Sleep time (h)	8.085 (1.135)	8.098 (1.179)	8.215 (1.161)	< 0.001
Prevalent diabetes, n (%)	32 (1.215)	38 (1.438)	49 (1.861)	0.148
Prevalent obesity, n (%)	162 (6.153)	114 (4.315)	69 (2.621)	< 0.001
Prevalent overweight, n (%)	540 (20.509)	472 (17.865)	274 (10.406)	< 0.001
Prevalent hypertension, n (%)	554 (21.041)	478 (18.092)	391 (14.850)	< 0.001

BMI: Body mass index; WHR: Waist-hip ratio; PAL: Peer-assisted learning; SBP: Systolic blood pressure; DBP: D binding protein.

Citation: Ren XH, Ye YW, He LP. Baseline differences may impact on relationship between dietary tryptophan and risk of obesity and type 2 diabetes. World J Clin Cases 2022; 10(21): 7617-7619
URL: https://www.wjgnet.com/2307-8960/full/v10/i21/7617.htm
DOI: https://dx.doi.org/10.12998/wjcc.v10.i21.7617