Table 2.

Frequency of certain risk factors based on gender

Risk factor	Definition	Age group	Prevalence for women [reference]	Prevalence for men [reference]
Low Ca and Vit D intake	Less than 1000mg Ca and less than 800u vit D	≥50	84.1%[27]	93.6%[27]
Low serum Vit D	Serum level less than 62,5nmol/lit or 25ng/dl	≥65	41.2%[28]	52.8%[28]
Smoking	Current smokers	≥55	2.6%[29]	17.5%[29]
Low physical activity or inactivity	No activity or activity less than 1 hour of walking per week	≥50	67.1%[31]	65.4%[31]
Low BMI	BMI less than 20	≥50	7.7%[30]	13.3%[30]