Osteoporosis Int (1992) 2:122-127 © 1992European Foundation for Osteoporosis
Osteoporosis International
Original Article A Case-Control Study of Hip Fracture: Evaluation of Selected Dietary Variables and Teenage Physical Activity J. W. Nieves 1, J. A. Grisso 2 and J. L. Kelsey 1 1Division of Epidemiology, Columbia University,New York, and 2ClinicalEpidemiologyUnit, School of Medicine, Universityof Pennsylvania, Philadelphia, USA
Abstract. Recent diet, teenage physical activity and teenage calcium consumption were examined as risk factors for hip fracture in a case-control study. Cases were 161 white women admitted to one of 30 partidpating hospitals with a first hip fracture. Controls included 168 white women from general and orthopedic surgical services frequency-matched to cases by age group and hospital. Information on exposure to possible risk factors was obtained by in-person interview. No association was found between recent intake of calcium, phosphorus, protein, vitamin C or caffeine and hip fracture. Also, teenage calcium intake and milk drinking were not related to hip fracture risk. Recreational activities in adolescence and early adulthood appeared to afford protection against hip fracture. The highest quartile of recreational activity (I>4 times/week) was associated with an odds ratio of 0.24 (95% confidence interval 0.08-0.75) relative to the lowest quartile ( 4 activities per week) c o m p a r e d to the lowest quartile ( < 1 activity p e r week) was 0.24 (95% C I 0.08-0.75). T h e r e was a significant trend ( P = 0 . 0 0 7 ) of decreasing odds ratio with increasing f r e q u e n c y of recreational activity. A significant trend was also seen b e t w e e n increased scores on the s u m m a r y activity index and
No. of No. of Age-adjusted a cases controls odds ratio a (95% CI)
Multivariate ° adjusted odds ratio 6 (95% CI)
Recreational activity (number of activities per week)
Osteoporosis International
Original Article A Case-Control Study of Hip Fracture: Evaluation of Selected Dietary Variables and Teenage Physical Activity J. W. Nieves 1, J. A. Grisso 2 and J. L. Kelsey 1 1Division of Epidemiology, Columbia University,New York, and 2ClinicalEpidemiologyUnit, School of Medicine, Universityof Pennsylvania, Philadelphia, USA
Abstract. Recent diet, teenage physical activity and teenage calcium consumption were examined as risk factors for hip fracture in a case-control study. Cases were 161 white women admitted to one of 30 partidpating hospitals with a first hip fracture. Controls included 168 white women from general and orthopedic surgical services frequency-matched to cases by age group and hospital. Information on exposure to possible risk factors was obtained by in-person interview. No association was found between recent intake of calcium, phosphorus, protein, vitamin C or caffeine and hip fracture. Also, teenage calcium intake and milk drinking were not related to hip fracture risk. Recreational activities in adolescence and early adulthood appeared to afford protection against hip fracture. The highest quartile of recreational activity (I>4 times/week) was associated with an odds ratio of 0.24 (95% confidence interval 0.08-0.75) relative to the lowest quartile ( 4 activities per week) c o m p a r e d to the lowest quartile ( < 1 activity p e r week) was 0.24 (95% C I 0.08-0.75). T h e r e was a significant trend ( P = 0 . 0 0 7 ) of decreasing odds ratio with increasing f r e q u e n c y of recreational activity. A significant trend was also seen b e t w e e n increased scores on the s u m m a r y activity index and
No. of No. of Age-adjusted a cases controls odds ratio a (95% CI)
Multivariate ° adjusted odds ratio 6 (95% CI)
Recreational activity (number of activities per week)
