Geographical location Women Men Oslo, Norway 767 202 Malmö, Sweden 732 178 Stockholm, Sweden 637 145 Rochester, MN, USA 410 85 Trent, UK 405 97 Yugoslavia High calcium area Low calcium area 228 196 95 110 Oxford-Dundee, UK 309 73 Tottori, Japan 149 59 Singapore 59 63 Adebajo, Nigeria 3 4

Table 1: Age-adjusted incidence (per 100 000 per year) of DRF in different populations of people aged 35 years or older (ref 4)