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 | ||||||||||