Table 3

Proportion of falls and risk factors for using emergency medical services (EMS) due to injurious falls among elderly people in Beijing from 2010 to 2017

CharacteristicsParticipants using EMS due to injurious falls, N (%)Proportion of falls,
% (95% CI)
cOR (95% CI)aOR* (95% CI)
Overall82 694 (100.00)8.38 (8.32 to 8.43)--
Month of the call
 March–May19 808 (23.95)8.08 (7.97 to 8.18)1.06 (1.03 to 1.08)1.05 (1.03 to 1.07)
 June–August20 108 (24.32)8.84 (8.72 to 8.95)1.17 (1.14 to 1.19)1.16 (1.14 to 1.18)
 September–November22 545 (27.26)8.99 (8.88 to 9.10)1.19 (1.16 to 1.21)1.19 (1.16 to 1.21)
 December–February20 233 (24.47)7.68 (7.58 to 7.78)1.001.00
Time of day during the call
 00:00–01:592001 (2.42)4.11 (3.93 to 4.29)1.001.00
 02:00–03:591934 (2.34)4.54 (4.35 to 4.74)1.11 (1.04 to 1.18)1.11 (1.04 to 1.19)
 04:00–05:592810 (3.40)6.09 (5.88 to 6.32)1.52 (1.43 to 1.61)1.50 (1.42 to 1.59)
 06:00–07:597027 (8.50)9.71 (9.49 to 9.93)2.51 (2.39 to 2.64)2.46 (2.34 to 2.59)
 08:00–09:5915 125 (18.29)10.02 (9.87 to 10.17)2.60 (2.48 to 2.73)2.52 (2.40 to 2.64)
 10:00–11:5910 261 (12.41)9.85 (9.67 to 10.03)2.55 (2.43 to 2.68)2.49 (2.36 to 2.61)
 12:00–13:599847 (11.91)8.83 (8.67 to 9.00)2.26 (2.15 to 2.38)2.20 (2.09 to 2.31)
 14:00–15:599302 (11.25)9.23 (9.05 to 9.41)2.37 (2.26 to 2.49)2.31 (2.20 to 2.43)
 16:00–17:598570 (10.36)9.95 (9.75 to 10.15)2.58 (2.46 to 2.71)2.51 (2.39 to 2.64)
 18:00–19:596562 (7.94)8.27 (8.08 to 8.46)2.10 (2.00 to 2.22)2.06 (1.96 to 2.17)
 20:00–21:595932 (7.17)7.35 (7.17 to 7.53)1.85 (1.76 to 1.95)1.82 (1.72 to 1.91)
 22:00–23:593323 (4.02)5.22 (5.05 to 5.40)1.29 (1.22 to 1.36)1.27 (1.20 to 1.35)
Sex
 Male34 971 (43.01)7.15 (7.07 to 7.22)1.001.00
 Female46 339 (56.99)9.63 (9.55 to 9.72)1.39 (1.37 to 1.41)1.38 (1.36 to 1.40)
Age, years
 60–7940 280 (48.71)7.20 (7.14 to 7.27)1.001.00
 80–10036 978 (44.72)9.46 (9.36 to 9.55)1.34 (1.33 to 1.36)1.29 (1.27 to 1.31)
 Not indicated5436 (6.57)14.68 (14.32 to 15.04)2.22 (2.15 to 2.28)2.18 (2.11 to 2.25)
Region
 Urban60 243 (73.11)8.62 (8.55 to 8.68)1.12 (1.10 to 1.13)1.07 (1.05 to 1.09)
 Suburban22 160 (26.89)7.80 (7.70 to 7.90)1.001.00
Proportion of elderly population
 Low14 481 (17.57)7.81 (7.69 to 7.93)1.001.00
 Medium38 622 (46.87)8.23 (8.15 to 8.31)1.06 (1.04 to 1.08)1.09 (1.06 to 1.11)
 High29 300 (35.56)8.92 (8.82 to 9.02)1.16 (1.13 to 1.18)1.15 (1.12 to 1.17)
  • Participants with missing sex data (16 828) or missing district data (3987) were respectively excluded in corresponding analysis of proportion of falls and crude OR (cOR). Participants with missing sex or district data (20 723) were excluded in analysis of adjusted OR (aOR).

  • Percentages with 95% CI were unadjusted and calculated by the normal distribution method.

  • *Adjusted using the multivariable logistic regression model that included all six characteristics in this table.