Height and Risk of Hip Fracture: A Meta-Analysis of Prospective Cohort Studies

Table 2

Summary of the results on association between height and risk of hip fracture.

Variables	Number of studies	RR (95% CI)	%
Overall	7	1.65 (1.26, 2.16)	76.2	0.000
Location
US	4	1.69 (1.27, 2.24)	50.3	0.110
Europe	3	1.72 (0.83, 3.58)	78.5	0.000
Follow-up years
<10	3	1.37 (1.11, 1.69)	0.0	0.543
≧10	4	1.88 (1.15, 3.07)	86.5	0.000
Sex
Female	5	1.60 (1.18, 2.16)	78.8	0.000
Male	4	1.42 (1.00, 2.02)	50.9	0.106
Both sex	1	1.59 (0.60, 4.22)	NA	NA
Number of participants
<50000	4	1.47 (1.22, 1.76)	0.0	0.402
≧50000	3	1.96 (0.96, 4.01)	88.0	0.000
Number of cases
<400	5	2.07 (1.62, 2.64)	0.0	0.569
≧400	2	1.16 (1.04, 1.29)	23.6	0.252
Study quality
Moderate	2	1.69 (0.93, 3.06)	77.9	0.034
High	5	1.71 (1.14, 2.56)	76.9	0.000
Adjustment for confounders
Number of confounders
<4	3	1.39 (1.01, 1.91)	80.0	0.007
≧4	4	1.94 (1.49, 2.51)	0.0	0.812
Alcohol
Yes	3	1.97 (1.50, 2.57)	0.0	0.675
No	4	1.39 (1.04, 1.86)	71.1	0.016
Smoking
Yes	3	2.06 (1.43, 2.96)	0.0	0.690
No	4	1.49 (1.11, 2.01)	80.7	0.001
Weight
Yes	2	1.83 (1.33, 2.50)	0.0	0.976
No	5	1.58 (1.15, 2.17)	77.7	0.001