Table 1.
Number of children sampled in SPARCLE2, by SPARCLE1 status, region and participation status in SPARCLE2
| Population-based registers | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |
North England* |
Northern Ireland* |
West Sweden* |
East Denmark* |
South west Ireland** |
Central Italy** |
South east France† |
South west France** |
North west Germany |
ALL REGIONS |
||||||||||
| |
||||||||||||||||||||
| |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
n |
(%) |
|
Longitudinal sample |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| SPARCLE1 participants |
116 |
(100) |
102 |
(100) |
83 |
(100) |
115 |
(100) |
98 |
(100) |
85 |
(100) |
67 |
(100) |
77 |
(100) |
75 |
(100) |
818 |
(100) |
| Participated in SPARCLE2 |
80 |
(69) |
85 |
(83) |
68 |
(82) |
77 |
(67) |
74 |
(76) |
41 |
(48) |
50 |
(75) |
55 |
(71) |
64 |
(85) |
594 |
(73) |
| Did not participate in SPARCLE2 |
36 |
(31) |
17 |
(17) |
15 |
(18) |
38 |
(33) |
24 |
(24) |
44 |
(52) |
17 |
(25) |
22 |
(29) |
11 |
(15) |
224 |
(27) |
|
Supplementary sample |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (i) Children sampled in SPARCLE1, who |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| did not participate in SPARCLE1 |
|
|
|
|
|
|
|
|
10 |
(100) |
|
|
53 |
(100) |
18 |
(100) |
|
|
81 |
(100) |
| Participated in SPARCLE2 |
|
|
|
|
|
|
|
|
1 |
(10) |
|
|
7 |
(13) |
1 |
(6) |
|
|
9 |
(11) |
| Did not participate in SPARCLE2 |
|
|
|
|
|
|
|
|
9 |
(90) |
|
|
46 |
(87) |
17 |
(94) |
|
|
72 |
(89) |
| (ii) Children not sampled in SPARCLE1 |
60 |
(100) |
22 |
(100) |
|
|
33 |
(100) |
5 |
(100) |
1 |
(100) |
38 |
(100) |
22 |
(100) |
10 |
(100) |
191 |
(100) |
| Late registrations |
31 |
|
22 |
|
|
|
0 |
|
3 |
|
1 |
|
12 |
|
22 |
|
|
|
91 |
|
| Incomers |
2 |
|
0 |
|
|
|
0 |
|
2 |
|
0 |
|
0 |
|
0 |
|
|
|
4 |
|
| On register for SPARCLE1 but not sampled |
27 |
|
0 |
|
|
|
33 |
|
0 |
|
0 |
|
25 |
† |
0 |
|
|
|
85 |
|
| Missed in SPARCLE1 |
0 |
|
0 |
|
|
|
0 |
|
0 |
|
0 |
|
1 |
|
0 |
|
|
|
1 |
|
|
Participated in SPARCLE2 |
29 |
(48) |
3 |
(14) |
|
|
9 |
(27) |
2 |
(40) |
1 |
(100) |
8 |
(21) |
2 |
(9) |
10 |
(100) |
64 |
(34) |
|
Did not participate in SPARCLE2 |
31 |
(52) |
19 |
(86) |
|
|
24 |
(73) |
3 |
(60) |
0 |
(0) |
30 |
(79) |
20 |
(91) |
0 |
(0) |
124 |
(66) |
| All SPARCLE2 participants | 109 | 88 | 68 | 86 | 77 | 42 | 65 | 58 | 74 | 667 | ||||||||||
* In these regions, a random sample of eligible children was targeted in SPARCLE1. ** in these regions, all eligible children were targeted. † Southeast France did not include in SPARCLE1 all registered children in the eligible range of dates of birth; this was partially rectified. in SPARCLE2.