Table 1: Characteristics of Study Participants

Characteristics Males (n=498) Females (n=468)
Age (yrs) 64.8 (2.5) 66.3 (2.6)
BMI (kg/m2)1 26.6 (1.1) 26.9 (1.2)
Alcohol consumption (units per week)2 10.0 (3.0, 22.5) 2.5 (0.5, 7.0)
Habitual Activity (%)3 64.0 (14.8) 61.3 (14.9)
N (%) Current smokers 73 (14.7) 45 (9.6)
N (%) Ex-smokers 258 (51.8) 132 (28.2)
N (%) Never smoked 167 (33.5) 290 (62.0)
N (%) Current manual social class IIIM-V4 277 (55.6) 286 (61.1)
N (%) Current non-manual social class I-IIINM4 193 (38.8) 182 (38.9)
Femoral Neck BMD (g/cm2)5 0.85 (0.12) 0.76 (0.12)
Total femoral BMD (g/cm2)5 1.04 (0.13) 0.90 (0.13)
Lumbar Spine BMD (g/cm2)6 1.08 (0.16) 0.96 (0.17)
Femoral Neck BMC (g)5 5.0 (0.8) 3.9 (0.7)
Total femoral BMC (g)5 48.4 (8.1) 32.5 (5.8)
Lumbar spine BMC (g)7 77.4 (15.6) 57.2 (13.2)

Mean (SD) unless stated otherwise.
1 Geometric mean and SD.
2 Median and IQR among drinkers. 20 men and 86 women stated that they do not drink alcohol.
3 Standardised score ranging 0-100 derived from frequency of gardening, housework, climbing stairs and carrying loads in a typical week. Higher scores indicate greater level of activity.
4 Social class was unclassified for 28 men.
5 Data on femoral neck BMD and BMC and total femoral BMD and BMC was missing for 3 men and 1 woman.
6 Data on lumbar spine BMD was missing for 1 man.
7 Data on lumbar spine BMC was missing for 3 men and 25 women.