Table 2 Results of Multivariate Cox’s Proportional Hazard Model, Selenium and Cognitive Decline Study, People’s Republic of China, December 2003 – April 2012
From: Cognitive function, body mass index and mortality in a rural elderly Chinese cohort
Variables | Entire cohort (n = 2000) | Sub-sample (n = 1948)* | ||
|---|---|---|---|---|
Hazard ratio | 95% CI | Hazard ratio | 95% CI | |
Age at Baseline | 1.096 | (1.080-1.113) | 1.095 | (1.078-1.113) |
Female | 0.579 | (0.478-0.701) | 0.542 | (0.442-0.664) |
BMI: | ||||
Underweight | 1.639 | (1.301-2.064) | 1.504 | (1.170-1.933) |
Overweight | 1.092 | (0.818-1.457) | 1.047 | (0.770-1.424) |
Obese | 0.392 | (0.146-1.055) | 0.314 | (0.100-0.984) |
Normal weight | 1.000 | Reference | 1.000 | Reference |
Diabetes | 2.235 | (1.390-3.595) | 2.303 | (1.391-3.814) |
Stroke | 1.777 | (1.142-2.765) | 1.954 | (1.241-3.077) |
Cognitive quintiles | ||||
1st Quintile | 1.475 | (1.130-1.926) | 1.165 | (0.878-1.545) |
2nd Quintile | 1.241 | (0.936-1.645) | 0.791 | (0.588-1.064) |
3rd Quintile | 1.000 | Reference | 1.000 | Reference |
4th Quintile | 1.074 | (0.803-1.439) | 0.851 | (0.628-1.154) |
5th Quintile | 0.686 | (0.493-0.955) | 0.537 | (0.380-0.759) |