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Table 1 Characteristics of the sample and study groups

From: Participant recruitment in sensitive surveys: a comparative trial of ‘opt in’ versus ‘opt out’ approaches

 

Whole sample frequency (%)

‘Opt in’ group frequency (%)

‘Opt out’ group frequency (%)

Test statistic andp-value

Deceased sex

   

χ2 =0.03, p-value=0.87

Male

617 (43.4)

310 (43.6)

307 (43.2)

 

Female

805 (56.6)

401 (56.4)

404 (56.8)

 

Deceased age

   

t=0.05, p-value= 0.96

Mean (SD)

80.3 (13.0)

80.3 (12.9)

80.3 (13.0)

 

Cause of death

   

χ2 =0.08, p-value=0.96

CVD

354 (24.9)

176 (24.8)

178 (25.0)

 

Cancer

485 (34.1)

245 (34.5)

240 (33.8)

 

Other

583 (41.0)

290 (40.8)

293 (41.2)

 

Place of death

   

χ2 =0.03, p-value=0.99

Home

195 (13.7)

98 (13.8)

97 (13.6)

 

Hospital

725 (51.0)

361 (50.8)

364 (51.2)

 

Care Home/Hospice

502 (35.3)

252 (35.4)

250 (35.2)

 

Deprivation quintile

   

χ2 =2.79, p-value=0.59

1 (least deprived)

375 (26.4)

176 (24.8)

199 (28.0)

 

2

294 (20.7)

156 (21.9)

138 (19.4)

 

3

371 (26.1)

187 (26.3)

184 (25.9)

 

4

331 (23.3)

168 (23.6)

163 (22.9)

 

5 (most deprived)

51 (3.6)

24 (3.4)

27 (3.8)

 

Respondent sex

   

χ2 =0.52, p-value=0.47

Male

643 (45.2)

315 (44.6)

328 (46.5)

 

Female

768 (54.0)

391 (55.4)

377 (53.5)

 

Respondent relation to deceased

   

χ2 =1.13, p-value=.57

Spouse/Partner

207 (14.6)

110 (16.7)

97 (14.7)

 

Son/daughter

775 (54.5)

380 (57.7)

395 (60.0)

 

Other

335 (23.6)

169 (25.6)

166 (25.2)