Table 2.

Health-related quality of life, back pain and physical function in relation to number of vertebral fractures (VF)

	No VF N = 750	VF (any) N = 277	p valuea	One VF N = 194	Two VF N = 56	More than two VFs N = 27	ANOVAA p value
SF-12
PCS12	46.2 ± 10.5c	43.5 ± 11.3j	< 0.001	43.7 ± 11.1§o	45.0 ± 10.6	39.0 ± 13.9*^#w	< 0.001
MCS12	54.3 ± 8.5c	54.7 ± 9.1j	0.543	54.5 ± 8.9o	55.4 ± 9.4	54.1 ± 9.7w	0.810
Back pain, % (n)	59.9 (449)	69.0 (191)	0.008 b	67.5 (131)	69.6 (39)	77.8 (21)	0.042 b
Function
OLS (s)	15.3 ± 10.4d	13.5 ± 10.3k	0.030	13.0 ± 10.1p	15.9 ± 11.1t	11.8 ± 9.2×	0.051
TUG (s)	8.5 ± 2.6e	9.1 ± 3.2j	0.004	9.1 ± 3.4§o	8.4 ± 2.2	10.3 ± 3.6*^#w	< 0.001
TUG manual (s)	10.1 ± 2.6f	10.5 ± 2.8l	0.027	10.5 ± 2.7q	10.0 ± 2.3	12.2 ± 3.8*^#y	0.001
Walking speed, (m/s)	1.29 ± 0.23g	1.23 ± 0.26j	0.001	1.23 ± 0.25o	1.29 ± 0.24	1.10 ± 0.28*^#w	< 0.001
30-s chair stand test, (n)	11.4 ± 3.4h	10.7 ± 3.1m	0.006	10.6 ± 3.1§r	11.2 ± 3.1u	10.5 ± 3.6z	0.028
Grip strength (kg)	13.4 ± 5.2i	13.1 ± 5.8n	0.358	13.0 ± 5.6s	13.8 ± 6.1v	12.1 ± 6.2w	0.481

Results are presented as mean ± standard deviation for continuous variables and as percentage and number for categorical variables

PCS Physical Component Summary, MCS Mental Component Summary, OLS one-leg standing, TUG Timed Up and Go, TUG manual Timed Up and Go with a glass of water in one hand. Maximum grip strength is presented for the dominant hand

^AOne way ANOVA, followed by least significant difference post hoc test

^aIndependent samples t test

^bχ² test

^c749

^d613

^e747

^f735

^g745

^h710,

ⁱ729

^j275

^k213

^l267

^m256

ⁿ270

^o193

^p155

^q188

^r182

^s189

^t41

^u53

^v55

^w26

^x17

^y23

^z21

^§One VF vs. no VF

*More than two VFs vs. no VF

^More than two VFs vs. one VF

^#More than two VFs vs. two VFs. Significance was defined by a p value < 0.05 and significant values are presented in bold