Further , there were fewer episodes of diarrhoea and ARIs in the intervention group for ` whole families ' ( -31 % , 95 % CI = -37 % , -5 % ; and -14 % , 95 % CI = -23 % , -6 % , respectively ) , 6 - to 15-year-olds ( -30 % , 95 % CI = -39 % , -7 % ; and -15 % , 95 % CI = -24 % , -6 % ) and under 5 s ( -32 % , 95 % CI = -41 % , -4 % ; and -20 % , 95 % CI = -29 % , -8 % ) .