From:  Effect of a smartphone-based educational toolkit on behavioural outcomes in personal care product use: a randomized controlled trial

 Loss to follow-up analysis (n = 101)a.

CharacteristicsDropped out (n = 35)Completed follow-up (n = 66)
Age (years)b22.31 ± 4.4020.91 ± 3.80
Ethnicityb
    Caucasian origins4 (11.4)13 (19.7)
    African origins2 (5.7)9 (13.6)
    Asian origins22 (62.9)32 (48.5)
    Other origins7 (20.0)12 (18.2)
Incomeb
    Below/Equal LICOc8 (22.9)16 (24.2)
    Above LICOc25 (71.4)44 (66.7)
    Prefer not to say2 (5.7)6 (9.1)
Place of residenceb
    Greater Toronto Area24 (68.6)55 (83.3)
    Other11 (31.4)11 (16.7)
Place of birthb
    Canada23 (65.7)44 (66.7)
    Other12 (34.3)22 (33.3)
Personal chemical sensitivity diagnosisb
    Yes/Maybe11 (31.4)20 (30.3)
    No24 (68.6)46 (69.7)
Household chemical sensitivity diagnosisb
    Yes/Maybe13 (37.1) 23 (34.8)
    No22 (62.9)43 (65.2)

a: No statistically significant differences were reported in the baseline sociodemographic characteristics of participants who completed the study and those who dropped out; b: Continuous variables were reported as mean and standard deviations. Categorical data were presented as frequency and percentage; c: LICO stands for low-income cut-off.