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Table 3 Separate effects and effect of the COPD and HB product term on chair rise and word memorization

From: Impact of COPD and anemia on motor and cognitive performance in the general older population: results from the English longitudinal study of ageing

  Time to complete Chair-risebNumber of words memorizedb
M1 dM2eM1dM2e
COPDa1 vs. 00.17 (0.07 to 0.27)0.11 (0.01 to 0.2)−0.08 (− 0.18 to 0.02)−0.04 (− 0.14 to 0.06)
2 vs. 00.31 (0.22 to 0.40)0.23 (0.14 to 0.32)−0.15 (− 0.24 to − 0.07)−0.09 (− 0.18 to − 0.003)
3 vs. 00.58 (0.43 to 0.73)0.46 (0.31 to − 0.60)−0.19 (− 0.34 to − 0.03)−0.10 (− 0.26 to 0.05)
4 vs. 00.74 (0.46 to 1.01)0.64 (0.37 to 0.91)−0.12 (− 0.4 to 0.16)−0.04 (− 0.32 to 0.24)
HB-(g/dl)cAssociation between lower HB level and time to complete chair rise0.05 (0.03 to 0.06)0.034 (0.02 to 0.05)−0.03 (− 0.04 to − 0.001)−0.02 (− 0.04 to − 0.001)
COPD + HB (g/dl)unit decrease in HB *COPD 1 vs. 00.1 (0.03 to 0.17)0.1 (0.04 to 0.17)0.11 (0.04 to 0.18)0.11 (0.05 to 0.18)
Unit decrease in HB*COPD 2 vs. 00.04 (−0.02 to-0.11)0.05 (−0.01 to 0.11)− 0.02 (− 0.08 to 0.04-)−0.03 (− 0.09 to 0.03)
Unit decrease in HB *COPD 3 vs. 00.08 (−0.01 to 0.18)0.11 (0.02 to 0.2)−0.01(− 0.11 to 0.09)-)−0.02 (−  0.11 to 0.08)
Unit decrease in HB *COPD 4 vs. 00.36 (0.17 to 0.55)0.36 (0.17 to 0.54)−0.03 (− 0.23 to 0.16)−0.04 (−  0.24 to 0.15)
  1. aCOPD1 = mild; 2 = moderate; 3 = severe; 4 = very severe
  2. bmodeled as the decrease per SD (SD− 1) in words memorized and time to complete chair raises
  3. cHB was included as a continuous variable in g/dl
  4. dadjustment model 1: sex and age, number of test repetitions; N = 8351 measurements; 5709 persons
  5. emodel 2 additionally adjusts for blood pressure, myocardial infarction (MI), stroke, diabetes, total cholesterol, alcohol, depression grip strength and smoking, imputed from complete data for M1 and available values for M2
  6. *Product term