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Table 1 Participant characteristics and health status at baseline, by group

From: The effect of using social pressure in cover letters to improve retention in a longitudinal health study: an embedded randomised controlled retention trial

 

Social pressure intervention

N = 2223

Control

N = 2224

Gender (N = 4329)

 Male n (%)

 Female n (%)

993 (46)

1170 (54)

1027 (47)

1139 (53)

Age (N = 4090)

 Mean (SD)

 Median (Min,Max)

74.9 (6.9)

74 (65,97)

74.7 (6.7)

74 (65,98)

Number of study participants in household (N = 4447)

 1 n (%)

 2 n (%)

 3 n (%)

1821 (82)

402 (18)

0 (0)

1821 (82)

400 (18)

3 (0.1)

Current home status (N = 4316)

 Lives alone n (%)

 Does not live alone n (%)

828 (38)

1334 (62)

745 (35)

1409 (65)

Ethnicity (N = 4315)

 White British n (%)

 Other n (%)

2044 (95)

115 (5)

2070 (96)

86 (4)

Education (N = 4049)

 No qualifications n (%)

 At least 1 O-Level or equivalent n (%)

1012 (50)

1003 (50)

991 (49)

1043 (51)

How often help is needed with reading materials (N = 4220)

 Never/Rarely n (%)

 Sometimes/Often/Always n (%)

1699 (80)

415 (20)

1693 (80)

413 (20)

Quality of life (from WHOQOL) (N = 4257)

 Very poor/poor/neutral n (%)

 Good/very good n (%)

611 (29)

1518 (71)

612 (29)

1516 (71)

Satisfaction with health (from WHOQOL) (N = 4249)

 Very dissatisfied/dissatisfied/neutral n (%)

 Satisfied/very satisfied n (%)

1011 (48)

1110 (52)

1010 (47)

1118 (53)

Number of long-term conditions (using BAYLISS) (N = 4329)

 Mean (SD)

 Median (Min,Max)

5.4 (3.1)

5 (0,19)

5.4 (3.2)

5 (0,21)