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Table 1 Study period details

From: Prevention of hip fractures in older adults residing in long-term care facilities with a hip airbag: a retrospective pilot study

  Control Run-in Intervention
Start date 01–01-17 01–05-18 01–10-18
End date 01–05-18 01–10-18 29–02-20
Study days, n 485 153 516
Patients, n 969 958 904
Person years, n 1286 401 1277
Sex
  Female, % 70 70 69