Table 1 

Mean (range or SD^{a}) or proportion for selected characteristics of the respondents and the total sample invited to the reproducibility study 

Characteristic 
Respondents (n = 1488)^{b} 
Invited (n = 1994)^{b} 



Mean age, years (range) 
59.9 
(46–75) 
59.8 
(46–75) 
Mean weight, kg (SD) 
70.3 
(12.0) 
70.1 
(12.0) 
Mean height, cm (SD) 
165.8 
(5.8) 
165.7 
(5.7) 
Mean BMI, kg/m^{2 }(SD) 
25.6 
(4.1) 
25.5 
(4.1) 
Mean energy intake, MJ/day (SD) 
6.44 
(1.87) 
6.48 
(1.90) 
Mean physical activity, scale 1–10 (SD) (1 = very low, 10 = very high) 
5.3 
(1.8) 
5.2 
(1.8) 
Try to lose weight, % 
36 
35 

Daily smokers, % 
23 
24 

Teetotalers, % 
12 
13 

Take cod liver oil supplements, % 
42 
41 

College or university education, % 
37 
36 

Retired, % 
25 
24 



^{a}Standard deviation ^{b}Number may not total to 1488 or 1994 for each characteristic due to missing values 

Parr et al. Nutrition Journal 2006 5:4 doi:10.1186/1475289154 