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Table 2 Demographic characteristics of patient sample by level of study participation with P value for tests of variation across the three groups

From: Test–retest stability of patient experience items derived from the national GP patient survey

 

Patients sent but not returning a test questionnaire within 3 weeks of mail out.a

Patients sent but not returning a retest questionnaire within 4 weeks of mail out.

Patients returning both a test and a retest questionnaire within the deadlines.

P value

Number

2009

249

348

n/a

Number (%) male

807 (40.1)

89 (35.7)

138 (39.7)

0.404

Number (%) white Britisha

404 (88.0)

204 (89.1)

326 (95.6)

0.001

Mean (SD) age in years

46.2 (18.5)

59.4 (18.8)

65.3 (15.1)

<0.001

  1. aEthnicity data was only available for those who returned a completed test questionnaire and responded to the ethnicity item. For patients sent but not returning a test questionnaire within 3 weeks of mail out, n = 473; for patients sent but not returning a retest questionnaire within 4 weeks of mail out, n = 229; for patients returning both a test and a retest questionnaire within the deadlines, n = 341
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