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Table 1 Completion rates and sample characteristics of those included in the analysis at each time point

From: Impact of a health marketing campaign on sugars intake by children aged 5–11 years and parental views on reducing children’s consumption

 Baseline
(n = 590)
Peak-campaign (n = 553)Immediately post campaign (n = 497)10-months post campaign (n = 371)12-months post campaign (n = 380)
Number of participants contacted to take part837837837539539
Number of participants completing at least one dietary recall602570506372381
Completion rate (%)71.968.160.569.070.7
Participants removed from dataset due to invalid dietary recalls (n)1217911
Number of participants included in analysis590553497371380
Age in years (n [%])
 5144 (24)132 (24)119 (24)84 (23)82 (22)
 691 (15)89 (16)75 (15)55 (15)57 (15)
 785 (14)79 (14)70 (14)57 (15)58 (15)
 886 (15)78 (14)66 (13)53 (14)53 (14)
 970 (12)68 (12)58 (12)44 (12)47 (12)
 1068 (12)65 (12)63 (13)44 (12)48 (13)
 1146 (8)42 (8)46 (9)34 (9)35 (9)
Mean age (years) [Standard deviation]7.4 [2.0]7.4 [2.0]7.5 [2.0]7.5 [2.0]7.6 [2.0]
Gender (n [%])
 Male279 (47)257 (46)234 (47)172 (46)175 (46)
 Female311 (53)296 (54)263 (53)199 (54)205 (54)
Ethnicity (n (%))
 White529 (90)493 (89)440 (89)331 (89)336 (88)
 Asian/Asian British31 (5)32 (6)29 (6)21 (6)20 (5)
 Black/African/Caribbean/Black British12 (2)11 (2)12 (2)8 (2)9 (2)
 Mixed/multiple ethnic9 (2)9 (2)7 (2)6 (2)8 (2)
 Other Ethnic Group4 (1)4 (1)4 (1)1 (0)3 (1)
 Prefer not to answer5 (1)4 (1)5 (1)4 (1)4 (1)
Socioeconomic group (n [%])
 ABC1396 (67)370 (67)339 (68)252 (68)255 (67)
 C2DE194 (33)183 (33)158 (32)119 (32)125 (33)