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Table 4 Age-specific changes in incidence of selected age-related impairments over the age of 80 years, 1995 to 2014

From: Evolution of the “fourth stage” of epidemiologic transition in people aged 80 years and over: population-based cohort study using electronic health records

Condition

Age group (years)

Hazard ratioa (95% CI)

1995-1999

2000-2004

2005-2009

2010-2014

Dementia

80-84

Ref.

1.28 (1.17 to 1.39)

1.85 (1.70 to 2.01)

2.94 (2.70 to 3.21)

85-89

Ref.

1.21 (1.12 to 1.30)

1.55 (1.44 to 1.66)

2.40 (2.23 to 2.57)

90-94

Ref.

1.16 (1.06 to 1.26)

1.50 (1.37 to 1.63)

2.03 (1.87 to 2.20)

95-99

Ref.

1.32 (1.12 to 1.55)

1.76 (1.51 to 2.04)

2.43 (2.09 to 2.82)

100+

Ref.

1.30 (0.70 to 2.42)

2.18 (1.21 to 3.90)

2.52 (1.41 to 4.50)

Cognitive/memory

80-84

Ref.

2.29 (2.05 to 2.55)

3.61 (3.25 to 4.01)

5.57 (5.01 to 6.20)

85-89

Ref.

2.36 (2.11 to 2.63)

3.84 (3.46 to 4.27)

5.64 (5.08 to 6.27)

90-94

Ref.

2.53 (2.16 to 2.98)

4.25 (3.64 to 4.96)

6.30 (5.40 to 7.34)

95-99

Ref.

2.49 (1.81 to 3.42)

4.31 (3.17 to 5.84)

6.62 (4.89 to 8.95)

100+

Ref.

2.28 (0.67 to 7.77)

3.96 (1.22 to 12.8)

6.02 (1.88 to 19.3)

MSK pain

80-84

Ref.

1.06 (1.02 to 1.10)

1.30 (1.25 to 1.35)

1.26 (1.21 to 1.32)

85-89

Ref.

1.06 (1.01 to 1.11)

1.29 (1.23 to 1.35)

1.22 (1.16 to 1.28)

90-94

Ref.

1.00 (0.93 to 1.06)

1.25 (1.17 to 1.33)

1.18 (1.11 to 1.26)

95-99

Ref.

1.00 (0.88 to 1.14)

1.33 (1.18 to 1.50)

1.32 (1.16 to 1.49)

100+

Ref.

0.83 (0.55 to 1.25)

1.45 (1.00 to 2.10)

1.63 (1.12 to 2.37)

Falls

80-84

Ref.

1.08 (1.03 to 1.13)

1.18 (1.13 to 1.24)

1.26 (1.19 to 1.32)

85-89

Ref.

1.05 (1.00 to 1.10)

1.11 (1.06 to 1.16)

1.18 (1.13 to 1.23)

90-94

Ref.

0.96 (0.91 to 1.02)

1.11 (1.05 to 1.17)

1.13 (1.07 to 1.19)

95-99

Ref.

1.03 (0.94 to 1.14)

1.21 (1.11 to 1.33)

1.25 (1.14 to 1.37)

100+

Ref.

1.10 (0.81 to 1.49)

1.33 (0.99 to 1.79)

1.50 (1.12 to 2.02)

Fractures

80-84

Ref.

0.94 (0.89 to 1.00)

1.18 (1.12 to 1.26)

1.38 (1.30 to 1.47)

85-89

Ref.

0.96 (0.91 to 1.02)

1.20 (1.13 to 1.27)

1.49 (1.41 to 1.58)

90-94

Ref.

0.97 (0.90 to 1.05)

1.19 (1.11 to 1.28)

1.42 (1.32 to 1.53)

95-99

Ref.

1.11 (0.97 to 1.27)

1.41 (1.24 to 1.60)

1.61 (1.42 to 1.83)

100+

Ref.

0.95 (0.64 to 1.41)

1.32 (0.91 to 1.92)

1.57 (1.09 to 2.27)

Hearing impairment

80-84

Ref.

1.14 (1.08 to 1.19)

1.26 (1.20 to 1.32)

1.28 (1.22 to 1.35)

85-89

Ref.

1.21 (1.15 to 1.28)

1.34 (1.27 to 1.41)

1.32 (1.25 to 1.39)

90-94

Ref.

1.22 (1.13 to 1.32)

1.40 (1.30 to 1.51)

1.43 (1.32 to 1.54)

95-99

Ref.

1.40 (1.20 to 1.62)

1.65 (1.43 to 1.91)

1.81 (1.56 to 2.10)

100+

Ref.

0.85 (0.51 to 1.41)

1.41 (0.88 to 2.25)

1.75 (1.10 to 2.78)

Visual impairment

80-84

Ref.

0.77 (0.72 to 0.82)

0.62 (0.58 to 0.66)

0.50 (0.46 to 0.54)

85-89

Ref.

0.85 (0.80 to 0.91)

0.69 (0.65 to 0.74)

0.54 (0.50 to 0.59)

90-94

Ref.

0.92 (0.84 to 1.01)

0.86 (0.79 to 0.95)

0.67 (0.61 to 0.74)

95-99

Ref.

1.03 (0.85 to 1.25)

1.00 (0.83 to 1.20)

0.88 (0.73 to 1.07)

100+

Ref.

0.76 (0.44 to 1.31)

0.74 (0.44 to 1.25)

0.51 (0.29 to 0.90)

  1. CI confidence interval
  2. aAdjusted for time and sex