Table 3.

Proportion of the Variation in the Percent Change in Femoral Strength (Year 2 vs. Baseline) Explained by Percent Change in Other Measured Variables, as Quantified by the R ² Value From Linear Regression Analysis

Variable	Pooled (N = 162)	PTH-PLB (N = 38)	PTH-ALN (N = 45)	CMB-ALN (N = 39)	ALN-ALN (N = 40)
Trab CPMT strength	0.85	0.90	0.88	0.75	0.83
Periph CPMT strength	0.61	0.66	0.53	0.69	0.62
Geometric strength	0.04	(<0.01)	(0.01)	0.11	0.11
Areal BMD (total hip, DXA)	0.15	0.23	0.37	(0.07)	(<0.01)
Integral density	0.80	0.85	0.79	0.72	0.81
Integral mass	0.75	0.81	0.67	0.76	0.82
Trab density	0.72	0.73	0.74	0.69	0.73
Trab mass	0.66	0.67	0.62	0.70	0.70
Cort density	0.06	0.27	(0.03)	(<0.01)	(0.04)
Cort mass	0.39	0.50	0.22	0.29	0.59
Trab CPMT density	0.54	0.47	0.66	0.42	0.55
Trab CPMT mass	0.55	0.47	0.58	0.53	0.60
Periph CPMT density	0.58	0.70	0.51	0.46	0.66
Periph CPMT mass	0.56	0.66	0.38	0.60	0.71

See Table 1 for legends.

Data are presented both for the pooled dataset and by treatment group. Values in parentheses denote cases in which the linear regression was not statistically significant (p > 0.05); all other cases had statistically significant regression at the p < 0.05 level at least.