Gao 2013.

Methods	Randomised controlled trial stratified by parental education and child's caries experience at baseline
Participants	3‐year old children enrolled in kindergarten grade 1 (K1), who have unfavourable oral health behaviour(s) (i.e. a child who needs intervention). Unfavourable oral health behaviours are defined as "brush teeth less often than twice a day" and/or "snack 3 times or more a day." Each child will be required to join this study together with his/her parent (mother or father) who spends the most time with him/her, so that a parent‐child dyad can be recruited. A child will be excluded if (i) he/she has a serious medical condition or (ii) his/her parents are non‐Chinese speaking and cannot understand the oral health materials and counselling, which will be in Chinese
Interventions	Conventional oral health education versus conventional oral health education and motivational interviewing versus conventional oral health education and motivational interviewing and interactive risk assessment
Outcomes	The primary outcome will be caries increment in children and the proportion of caries‐free children Other outcomes: changes in parental efficacy in protecting children's oral health and changes in children's dental behaviours
Notes	HKCTR‐1455 Author contacted for further information: no response so unable to clarify further