Table 1: Baseline characteristics* of new users of oral bisphosphonates, by province, sex and drug, April 2001 to March 2008
British ColumbiaOntario
MenWomenMenWomen
CharacteristicALD
n = 2 816
ETD
n = 7 514
RSD
n = 1 072
ALD
n = 12 262
ETD
n = 34 350
RSD
n = 5 251
ALD
n = 11 173
ETD
n = 26 608
RSD
n = 9 223
ALD
n = 48 010
ETD
n = 122 852
RSD
n = 40 624
Age, yr, mean ± SD77.6 ± 6.977.1 ± 6.777.2 ± 6.876.5 ± 7.076.9 ± 7.076.3 ± 6.976.9 ± 6.975.6 ± 6.577.1 ± 7.075.7 ± 7.375.1 ± 6.876.4 ± 7.6
Health services use in the year before index
Admission to hospital, %42.234.431.731.026.826.225.419.024.418.113.118.3
Resident of long-term care facility, %4.94.31.83.54.31.76.63.97.66.04.07.8
1-year fracture history, %
Hip5.52.42.34.62.42.75.51.95.04.11.74.2
Humerus/radius/ulna2.11.51.64.23.94.02.71.52.84.02.94.4
Vertebra5.13.44.92.92.32.23.12.03.11.61.01.8
Other osteoporosis-related fracture6.84.24.15.63.43.09.24.38.77.33.57.4
> 1- to 5-year fracture history, %
Hip2.31.71.91.81.91.51.91.42.02.01.42.2
Humerus/radius/ulna1.61.51.63.63.23.33.02.22.95.24.25.1
Vertebra1.10.81.40.60.60.61.10.71.20.80.60.8
Other OP-related fracture4.33.23.02.72.52.35.03.74.94.83.65.0
No. of previous fractures, %
081.988.385.582.886.386.380.788.380.781.087.080.2
15.14.45.13.83.93.29.67.110.110.78.511.4
≥ 213.17.39.313.59.810.59.74.69.28.34.58.4
DXA test, %44.134.153.455.546.162.355.861.759.657.669.761.7
Osteoporosis diagnosis, %25.619.629.333.125.137.336.235.438.537.338.939.7
Comorbidities, %
Alzheimer/other
dementia
7.84.23.65.53.92.911.16.511.88.45.69.9
Asthma/COPD/
emphysema
11.712.28.76.46.24.613.714.913.56.56.26.5
Depression3.61.81.52.91.61.318.317.318.219.919.420.3
Diabetes13.112.810.37.48.27.012.512.713.68.99.59.0
Falls/syncope/
neurologic/gait abnormalities/
hypotension
10.05.14.99.45.86.19.33.18.77.52.67.6
Hyperthyroidism0.40.3S†0.50.60.60.60.60.50.90.90.9
Inflammatory arthritis1.00.9S†0.60.60.26.57.37.14.74.65.1
Inflammatory bowel0.80.81.20.40.60.60.60.70.70.40.50.4
Liver diseaseS†S†S†0.10.1S†0.20.1S†0.10.10.1
Parkinson disease4.33.03.51.81.51.04.12.84.31.51.31.6
Stroke/TIA3.53.43.32.52.31.76.75.56.34.33.74.5
Drug use, %
Angiotensin-II receptor blockers8.27.58.410.110.012.35.54.25.85.74.36.7
Anticonvulsant agents3.43.02.32.02.01.93.42.93.41.91.92.1
Antiandrogens (men only)7.03.96.36.23.45.9
Aromatase inhibitors
(women only)
S†S†S†1.00.51.1
Benzodiazepines26.423.721.328.629.026.619.519.820.423.624.624.9
Beta-blockers21.120.119.918.519.018.59.29.19.08.89.88.7
Corticosteroids (orally)
   None75.971.977.889.087.289.784.58384.792.792.792.1
   0 mg < total prednisone
< 675 mg
12.716.412.27.28.26.54.35.14.33.03.13.2
   Prednisone equivalent
≥ 675 mg
11.411.810.03.84.63.811.211.911.04.34.24.8
Gastroprotective29.629.527.323.526.623.433.133.434.32829.231.4
Glitazones1.50.9S†0.80.61.01.10.61.60.80.50.9
Other antidiabetic medications10.711.89.96.89.35.81212.812.88.69.89.0
Hormone therapy
(women only)
12.011.310.25.69.44.9
Nitrates9.711.710.07.38.55.811.712.511.98.39.19.0
Narcotics: opioid agonists0.19.811.78.98.10.834.63334.626.826.228.6
NSAIDsS†29.223.523.125.620.230.238.329.526.533.126.1
SERMs (women only)S†S†S†1.00.91.0
SSRIs11.58.97.612.312.19.811.08.311.112.210.713
Non-SSRI antidepressants/
antimanics/
antipsychotics
11.611.410.412.513.611.311.69.712.512.011.713.6
Statins28.425.029.921.521.623.438.733.340.430.628.331.1
Thiazide diuretics16.914.514.521.120.220.620.417.520.927.426.727.9
Thyroid therapy9.17.86.519.218.919.07.97.18.219.017.419.6

Note: ALD = alendronate, COPD = chronic obstructive pulmonary disease, DXA = dual-energy X-ray absorptiometry, ETD = etidronate, NSAID = nonsteroidal anti-inflammatory drug, OP = osteoporosis, RSD = risedronate, SERM = selective estrogen-receptor modulator, SD = standard deviation, SSRI = selective serotonin reuptake inhibitor, TIA = transient ischemic attack.
*Age at start of treatment; unless otherwise indicated, other covariates were determined based on the year before the start of treatment.
†Denotes data suppression for fewer than 10 patients.