. Author manuscript; available in PMC: 2012 Aug 27.

Published in final edited form as: Gut. 2011 Jan 17;60(5):618–623. doi: 10.1136/gut.2010.225854

Table 3.

Predictors of serum cysteine concentration in the sub-cohort from the Linxian General Population Nutrition Intervention Trial cohort, from multivariable linear regression models.

Variable	β coefficient	Standard error	P
Intercept	242.41	12.063	<.0001
Sex, male	−0.020	2.72	0.99
Age^*, 1 year	1.38	0.1001	<.0001
Cigarette Smoking, ever	−4.51	2.76	0.10
Alcohol Drinking, any	3.54	2.30	0.13
BMI^‡, 1 kg/m²	1.79	0.35	<.0001
Creatinine, 0.12 units	−13.03	3.78	0.0006
Creatinine squared	1.019	0.29	0.0005

Age was centred at 55 years old in the model, the middle of the sub-cohort age distribution

^‡

Body mass index (BMI) was centred at 22 units, the sub-cohort median