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Table 4 Multiple logistic regression: study-level predictors of study finding*

From: Epidemiologic studies of modifiable factors associated with cognition and dementia: systematic review and meta-analysis

  Odds Ratio (95% CI) P-value
Year 1.06 (0.98;1.14) 0.13
Country    
US 1.00   
Europe 0.96 (0.45;2.06) 0.92
Other 0.99 (0.35;2.80) 0.99
Age group    
Excludes < 65y 1.00   
Includes < 65y 0.80 (0.40;1.60) 0.53
Study design    
Cross-sectional 1.00   
Cohort 0.60 (0.27;1.33) 0.21
Sample size 1.00 (0.99;1.00) 0.25
Cognitive outcome count 1.03 (0.54;1.98) 0.92
Cognitive outcome type    
AD/dementia/impairment 1.00   
Cognitive function/decline 1.52 (0.72;3.22) 0.27
Both 1.78 (0.16;19.7) 0.64
Risk factor    
EDU 1.00   
SMOK 0.21 (0.06;0.70) 0.012
ALCO 0.33 (0.08;1.29) 0.11
PA 2.49 (0.26;24.29) 0.43
CAFF 0.18 (0.04;0.84) 0.029
ANTIOX 0.20 (0.06;0.75) 0.016
HCY 0.41 (0.10;1.67) 0.22
N-3 FA 0.25 (0.06;1.05) 0.06
  1. *Positive or partially positive finding coded as “1”, Null or against hypothesized finding coded as “0” (referent category).
  2. Gender composition of the sample was excluded as a predictor due to lack of variability.