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Table 1 Descriptive analysis of the main variables used in the study

From: Participants who were difficult to recruit at baseline are less likely to complete a follow-up questionnaire – results from the German National Cohort

 

Group

No-flyer

Flyer

n

%

n

%

Sex

 Male

620

40.6

671

43.8

 Female

906

59.4

861

56.2

Age

 20–29

153

10.0

152

9.9

 30–39

280

18.3

258

16.8

 40–49

268

17.6

286

18.7

 50–59

376

24.6

415

27.1

  ≥ 60

449

29.4

421

27.5

Nationality

 German

1402

91.9

1417

92.5

 Other

124

8.1

115

7.5

Examination program baseline

 Level 1

1204

78.9

1211

79.0

 Level 2

322

21.1

321

21.0

Reminder baseline

 0

782

51.2

767

50.1

 1

444

29.1

455

29.7

 2

191

12.5

189

12.3

  ≥ 3

109

7.1

121

7.9

Appointments baseline

 1

1134

74.3

1094

71.4

 2

287

18.8

324

21.1

  ≥ 3

105

6.9

114

7.4

Phone status baseline

 No phone

1225

80.3

1238

80.8

 Phone

301

19.7

294

19.2

Delay (years)

 Mean (SD)

2.1

(0.3)

2.1

0.2

Weekday

 Tuesday

547

35.8

563

36.7

 Wednesday

490

32.1

479

31.3

 Thursday

489

32.0

490

32.0

N

1526

50.0

1532

50.0