Pronostic factors of good functionality at 12 months of a hip fracture. Maluc Anoia study

BACKGROUND

Hip fracture usually occurs in frail elderly patients and is associated with an important morbi-mortality in the first year. The objective of the study is to describe the prognostic factors that would allow maintaining functionality at 12 months.

METHOD

From June 1, 2010 to May 31, 2013, all patients older than 69 years with hip fracture due to bone fragility admitted to the Geriatric Acute Unit of our hospital were included. We define as functional maintenance those patients who have lost between 0-15 points in the Barthel Index with respect to the previous to the fracture. Prospective study of bivariate data analysis for related and multivariate prognostic factors for predictive predictors.

RESULTS

271 patients were included, of them, 146 (54.8%), maintained functionality at 12 months and 122 (45.2%) no. Patients who maintain functional status are younger: average age 83.4 vs 85.80 years (P=.002); with better scores in the indexes of: Lawton prior to fracture 4.42 vs 2.40 (P<.001) and Barthel at discharge 34.2 vs. 27.1 (P=.002). There are also differences in the score of the "Geriatric Dementia Scale" 2.59 vs. 3.13 (P=.009), in the score of the "American Society Anesthesiologist"<II 62.2% vs 37.8% (P=0.006) and have presented less delirium during hospitalization 4.7% vs 35.3% (P=.002). In the multivariate analysis they maintained statistical significance, age OR: 1.044 (95% CI: 1.002-1.088) (P=.04) and the Lawton Index OR: 0.869 (95% CI: 0.804-0.940) (P <.001).

CONCLUSIONS

Prognostic factors of functional maintenance at 12 months are age and the ability to perform instrumental activities of daily life.

Oral bisphosphonate prescription and non-adherence at 12 months in patients with hip fractures treated in an acute geriatric unit

A poorer functional status at the time of fracture is a predictor of non-adherence to oral bisphosphonates initiated after a hip fracture, and suggests further opportunities for optimization of secondary fracture prevention in this high-risk population.

INTRODUCTION

Low adherence to treatment is a problem in post-fracture secondary prevention. We aimed to analyze the prognostic factors (related and predictive) associated with non-adherence to oral bisphosphonate prescription for hip fracture due to bone fragility (HFBF) 12 months after discharge from an acute geriatric unit.

METHODS

Prospective study of bivariate data analyzing related and multivariate factors predicting non-adherence of oral bisphosphonates at 12 months after treatment for HFBF. The statistical study was performed with SPSS 19.0.0.

RESULTS

We attended 368 patients with HFBF. At discharge, oral bisphosphonates were prescribed to 226 (61.42%) patients. At 12 months, we followed up 160 (70.7%) patients, 104 (65%) of whom had non-adherence to oral bisphosphonates. Bivariate analysis (adherent vs. non-adherent): age (83.79 ± 5.82 vs. 85.78 ± 5.80, p = .029); Lawton and Brody Index (4.29 ± 3.40 vs. 2.67 ± 3.31, p = .004); baseline Barthel Index (BI) (85.89 ± 21.99 vs. 74.18 ± 26.70) (p = .004); BI at admission (18.84 ± 10.00 vs. 14.47 ± 11.71, p = .004); BI at discharge (34.20 ± 15.40 vs. 27.45 ± 16.71, p = .011); baseline Functional Ambulation Classification (5.66 ± 0.98 vs. 5.43 ± 0.99, p = .025). Multivariate analysis: BI 0.980 (0.965-0.995, p = .007). Discriminatory capacity of the AUC model (± 95% CI): 0.634 (0.545-0.722).

CONCLUSIONS

At 12 months, there was low adherence to treatment with oral bisphosphonates in our model. A lower BI prior to treatment is a predictive factor for non-adherence treatment with oral bisphosphonate.