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Table 3 Characteristics of P1, P2 and P3 Full Participants (FPs) from the National Sample only

From: Investigating sources of non-response bias in a population-based seroprevalence study of vaccine-preventable diseases in the Netherlands

 

PIENTER (Years)

Sample Number (Response Rate %)

P1 (1995/1996)

N = 8356 (55.0%)

P2 (2006/2007)

N = 5834 (33.9%)

P3 (2016/2017)

N = 4897 (15.8%)

Age group (years)

   

0–9

2055 (24.6)

1200 (20.6)

916 (18.7)

10–19

1037 (12.4)

706 (12.1)

561 (11.5)

20–29

719 (8.6)

699 (12.0)

732 (15.0)

30–39

936 (11.2)

699 (12.0)

645 (13.2)

40–49

949 (11.4)

631 (10.8)

573 (11.7)

50–59

996 (11.9)

631 (10.8)

547 (11.2)

60–69

922 (11.0)

721 (12.4)

517 (10.6)

70–79

742 (8.9)

547 (9.4)

406 (8.3)

Sex

   

Male

3946 (47.2)

2647 (45.4)

2237 (45.7)

Female

4410 (52.8)

3187 (54.6)

2660 (54.3)

Migration background

   

Dutch

7415 (89.0)

4954 (84.9)

4257 (87.0)

Other Western

512 (6.2)

448 (7.7)

342 (7.0)

Moroccan or Turkish

200 (2.4)

153 (2.6)

55 (1.1)

Antillean, Surinamese or Aruban

95 (1.1)

98 (1.7)

56 (1.1)

Other Non-Western

108 (1.3)

181 (3.1)

186 (3.8)

Degree of urbanisation

   

Very high

938 (11.2)

834 (14.3)

821 (16.8)

High

1029 (12.3)

1923 (33.0)

1726 (35.3)

Moderate

2166 (25.9)

1281 (22.0)

901 (18.4)

Low

1776 (21.3)

1796 (30.8)

986 (20.1)

Very low

2447 (29.3)

N/A

463 (9.5)

Educational level

   

High

1801 (21.6)

1677 (28.8)

1837 (37.5)

Moderate

2437 (29.2)

1922 (32.9)

1632 (33.3)

Low

4008 (48.0)

2181 (37.4)

1138 (23.2)

Missing

110 (1.3)

54 (0.9)

290 (5.9)

Religion

   

Protestant

2091 (25.0)

1420 (24.3)

733 (15.0)

Catholic

2801 (33.5)

1692 (29.0)

1086 (22.2)

Other

726 (8.7)

465 (8.0)

314 (6.4)

None

2688 (32.2)

2221 (38.1)

2404 (49.1)

Missing

50 (0.6)

36 (0.6)

360 (7.4)

NIP participation

   

Yes/Yes, partly

4988 (59.7)

4037 (69.2)

3687 (75.3)

No

129 (1.5)

111 (1.9)

160 (3.3)

Don’t know

120 (1.4)

153 (2.6)

363 (7.4)

Not eligible

3038 (36.4)

1511 (25.9)

619 (12.6)

Missing

81 (1.0)

22 (0.4)

68 (1.4)

Opinion on vaccination changed

   

No

7256 (86.8)

4724 (81.0)

3711 (75.8)

More inclined

760 (9.1)

466 (8.0)

224 (4.6)

Less inclined

154 (1.8)

158 (2.7)

366 (7.5)

Don’t know/ missing

186 (2.2)

486 (8.3)

596 (12.2)

Self-reported Health Condition

   

Very good/good

6868 (82.2)

5351 (91.7)

4177 (85.3)

Not good/not bad

929 (11.1)

424 (7.3)

591 (12.1)

Bad/very bad

483 (5.8)

27 (0.5)

59 (1.2)

Don’t know/missing

76 (0.9)

32 (0.6)

70 (1.4)