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Table 3 Numbers and distribution of the participating’s (participants) and the invitations (invited GPs) by different background characteristicsa

From: SMS text messaging to measure working time: the design of a time use study among general practitioners

 

Participating’s (participants)b

Invitations (participants invited)c

N

%

N

%

Employment position

 Self-employed

642

(618)

58.6

(58.8)

2300

(2224)

45.7

(49.6)

 Salaried

214

(203)

19.5

(19.3)

1027

(894)

20.4

(19.9)

 Locum

239

(230)

21.8

(21.9)

1701

(1368)

33.8

(30.5)

 Total

1095

(1051)

100.0

(100.0)

5028

(4486)

100.0

(100.0)

Gender

 Male

461

(438)

42.1

(41.7)

2380

(1877)

47.3

(41.8)

 Female

634

(613)

57.9

(58.3)

2648

(2609)

52.7

(58.2)

 Total

1095

(1051)

100.0

(100.0)

5028

(4486)

100.0

(100.0)

Age in years

  < 40

496

(478)

45.3

(45.5)

2266

(1930)

45.1

(43.0)

 40 to 49

283

(265)

25.8

(25.2)

1340

(1229)

26.7

(27.4)

 50 to 59

268

(260)

24.5

(24.7)

1129

(1046)

22.5

(23.3)

 ≥ 60

48

(48)

4.4

(4.6)

293

(281)

5.8

(6.3)

 Total

1095

(1051)

100.0

(100.0)

5028

(4486)

100.0

(100.0)

  1. aThe sum of the percentages could deviate of 100% as a result of rounding
  2. bThis concerns the GPs who responded to the invitation letters and media announcements. There are 1095 participating’s as 44 GPs participated twice
  3. cWe took a stratified sample of the GP population with a different chance by employment position and gender. The background characteristics are based on the NIVEL registration of GPs and the pre-survey. There are 5028 invitations as some GPs were invited more than once