Fig. 1

Comparison of prevalence of osteoporosis among groups according to frequency of vegetables intake in Chinese postmenopausal women. a The results of comparison of prevalence of osteoporosis among groups according to Model 1 (Model 1: frequency of vegetables intake were categorized by group 1: once or twice per week, group 2: once per 2 days, and group 3: always). The prevalence of osteoporosis was 19.90, 24.14 and 29.47 % in the three groups, respectively. There were significantly differences among the three groups (P value = 0.015). b The results of comparison of prevalence of osteoporosis between groups according to Model 2 (Model 2: frequency of vegetables intake were categorized by low frequency and high frequency groups). The prevalence of osteoporosis was 20.87 and 29.47 % between the two groups, respectively. There were significantly differences between the two groups (P value = 0.005)