Skip to main content

Table 5 Age and body mass index adjusted means (SEM) of bone mass (stiffness indexa and mBMDb) by osteoarthritis (OA) grade at the knee, distal interphalangeal (DIP), proximal interphalangeal (PIP), carpometacarpal/metacarpophalangeal (CMC/MCP) joints, ages 60 years over.

From: Appendicular bone mass and knee and hand osteoarthritis in Japanese women: a cross-sectional study

OA grades No. Stiffness indexa P value* No. mBMDb P value*
Knee       
   0 151 65.8 (0.8)   154 2.14 (0.02)  
   1 82 65.8 (1.1) 0.99 83 2.06 (0.03) 0.03
   2 88 66.7 (1.0) 0.50 89 2.11 (0.03) 0.48
   3 65 66.3 (1.3) 0.75 66 2.14 (0.03) 0.90
   4 13 59.5 (2.8) 0.03 13 2.03 (0.07) 0.16
   Test for trend 0.71   Test for trend 0.89
DIP       
   0 50 65.8 (1.4)   51 2.11 (0.04)  
   1 61 64.9 (1.3) 0.61 61 2.07 (0.03) 0.37
   2 174 66.0 (0.7) 0.93 178 2.13 (0.02) 0.68
   3 52 65.6 (1.4) 0.90 52 2.09 (0.03) 0.69
   4 62 67.0 (1.2) 0.54 63 2.14 (0.03) 0.48
   Test for trend 0.43   Test for trend 0.29
PIP       
   0 227 66.0 (0.7)   231 2.11 (0.02)  
   1 85 65.8 (1.1) 0.90 86 2.15 (0.03) 0.17
   2 79 66.2 (1.1) 0.89 80 2.10 (0.03) 0.73
   3 5 58.9 (4.4) 0.11 5 2.14 (0.11) 0.75
   4 3 68.2 (5.6) 0.70 3 1.95 (0.14) 0.28
   Test for trend 0.80   Test for trend 0.73
CMC/MCP       
   0 278 65.9 (0.6)   282 2.12 (0.01)  
   1 40 62.5 (1.5) 0.04 41 2.04 (0.04) 0.06
   2 49 66.3 (1.4) 0.79 49 2.13 (0.04) 0.86
   3 29 70.0 (1.8) 0.03 30 2.16 (0.05) 0.40
   4 3 68.5 (5.6) 0.63 3 2.16 (0.14) 0.79
   Test for trend 0.16   Test for trend 0.64
  1. a: Stiffness index values were missing for 6 women. b: metacarpal bone mineral density. *P value versus women with no OA.