Table 1 Baseline patient details and correlation with day length at the time of recruitment
BaselineMean (SD)Correlation with day length
rp Value
Male (%)37 (29)
Using walking aids (%)64 (50)
Age (years)78.5 (6.5)0.020.81
Mini-mental state examination score29 (2.25)*−0.070.44
Number of medications5.0 (2.7)−0.060.48
Mean creatinine clearance (ml/min)48.7 (16.4)−0.060.51
BNP37.4 (21.7)*−0.090.34
Daily activity counts (count/24 h)104580 (51 015)0.43<0.001
6 min walk distance (m)300 (106)0.240.007
NEADL score47 (11)0.080.36
Sit-to-stand time (s)41.2 (19.2)−0.210.017
Timed-up-and-go time (s)15.1 (9.4)−0.110.21
EuroQol score0.69 (0.24)0.150.09
EuroQol thermometer score67.6 (16.7)0.120.20
  • *Median (interquartile range).

  • BNP, B-type natriuretic peptide; NEADL, Nottingham extended activities of daily living.