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. 2012 Dec 20;7(12):e52643. doi: 10.1371/journal.pone.0052643

Table 2. Bone mineral density and T-score at baseline and follow-up surveya.

Male Pre-menopausal femaleb Post-menopausal female
n 146 99 212
Baseline survey in 2005
Bone mineral density (g/cm2) 0.770 (0.064) 0.680 (0.056) 0.554 (0.085)
 Range 0.593–0.906 0.521–0.817 0.380–0.820
T-Score (%) 99.8 (8.2) 105.2 (8.7) 85.8 (13.2)
 Normal [n, (%)] 144 (98.6) 99 (100.0) 140 (66.0)
 Osteopenia [n, (%)] 2 (1.4) 0 (0.0) 47 (22.2)
 Osteoporosis [n, (%)] 0 (0.0) 0 (0.0) 25 (11.8)
Follow-up survey in 2009
Bone mineral density (g/cm2) 0.765 (0.069)c 0.669 (0.062)c 0.527 (0.084)c
 Range 0.565–0.913 0.482–0.803 0.330–0.725
T-Score (%) 99.1 (8.8)c 103.6 (9.6)c 81.7 (13.0)c
 Normal [n, (%)] 142 (97.3) 98 (99.0) 116 (54.7)
 Osteopenia [n, (%)] 4 (2.7) 1 (1.0) 56 (26.4)
 Osteoporosis [n, (%)] 0 (0.0) 0 (0.0) 40 (18.9)
a

Data are mean (standard deviation), range, or percent.

b

Newly thirty five female subjects reached menopause four years later.

c

P<0.001 vs baseline by paired t-test.