Table 1 Demographic, chronic disease and health related quality of life measures across survey main waves 1–6 and the first 6 monthly follow-up survey

n = 216

n = 210

n = 210

n = 207

n = 188

n = 166

n = 166

Categorical Measures (column %)

Partnered status

missing

1.39

0.95

0.48

0.97

1.06

0.00

1.20

Single

44.91

48.10

59.52

68.12

75.00

81.33

81.93

Partnered

53.70

50.95

40.00

30.92

23.94

18.67

16.87

Housing situation

missing

3.24

1.90

0.48

1.93

2.66

2.41

1.20

House

84.26

82.86

80.00

72.46

67.55

64.46

62.05

Apartment

10.65

10.48

12.86

14.01

13.83

12.65

13.86

Retirement/Nursing/Hostel

1.85

4.76

6.67

11.59

15.96

20.48

22.89

Transportation

missing

5.24

6.76

9.04

9.04

3.61

Other transport

10.00

14.01

19.68

25.90

31.33

Drive themselves

84.76

79.23

71.28

65.06

65.06

Cataracts (ever)

missing

0.00

0.00

0.00

0.00

No

64.25

48.94

34.34

34.34

Yes

35.75

51.06

65.66

65.66

Any eye surgery (inc. cataract) (ever)

missing

4.29

0.48

0.00

0.00

0.00

No

71.90

54.11

36.17

24.70

25.30

Yes

23.81

45.41

63.83

75.30

74.70

Macular degeneration (ever)

missing

1.06

1.20

No

77.13

69.88

69.28

Yes

21.81

30.12

29.52

Glaucoma (ever)

missing

1.06

0.00

1.20

No

82.98

80.72

78.92

Yes

15.96

19.28

19.88

Continuous Measures (Mean (Std. Dev.))

General health score (SF36)

73.11 (17.89)

72.29 (18.12)

71.37 (19.37)

68.15 (19.57)

66.36 (20.49)

64.74 (19.8)

61.07 (19.87)

Physical functioning score (SF36)

73.58 (21.34)

71.97 (21.69)

68.58 (23.94)

64.25 (26.49)

56.97 (25.49)

48.85 (26.83)

48.64 (25.31)

Mental health score (SF36)

81.53 (14.12)

81.61 (14.45)

81.83 (13.83)

81.14 (14.5)

80.76 (15.24)

81.11 (14.35)

78.73 (15.97)