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Table 2 Characteristics of participants by response to dissemination of results and by acceptance of treatment unmasking

From: A post-trial survey to assess the impact of dissemination of results and unmasking on participants in a 13-year randomised controlled trial on age-related cataract

 

SURVEY

TREATMENT UNMASKING

C HARACTERISTICS

Responders (n = 610)

Non-responders (n = 207)

χ2test

Accepted (n = 480)

Declined (n = 130)

χ2test

 

%

%

P

%

%

P

SEX

      

   Male

53.3

41.1

 

51.5

60.0

 

   Female

46.7

58.9

0.002

48.5

40.0

0.08

MARITAL STATUS

      

   Married

78.9

67.1

 

78.7

79.2

 

   Other

21.1

32.9

0.002

21.3

20.8

0.81

EDUCATION

      

   Primary school

44.9

54.6

 

42.3

54.6

 

   Middle school

25.8

21.3

 

28.1

16.9

 

   High school

29.3

24.1

0.06

29.6

28.5

0.01

TREATMENT ASSIGNED

      

   Placebo

48.8

51.7

 

46.5

57.7

 

   Treatment

51.2

48.3

0.48

53.5

42.3

0.02

CATARACT SURGERY

      

   Yes

21.2

28.5

 

21.5

20.0

 

   No

78.8

71.5

0.03

78.5

80.0

0.72

AGE (MEAN)

      

   Years

79.7

82.1

<0.001*

79.5

80.4

0.04*

  1. * T test