Introduction: There is a strong body of evidence advocating parent training programmes in the management of behavioral problems in children. In these programmes, attrition is a major challenge. We aimed to examine the sociodemographic and clinical profiles, parental motivation, and pre-intervention severity of children’s behavioural problems as rated by mothers who completed (PC) and mothers who dropped out (PD) of a parent training programme. We also aimed to determine whether there was any change in their children’s behaviour scores before and after intervention. We hypothesized that parent and child sociodemographic and clinical profiles, parental motivation, and pre-intervention severity of children’s behavioural problems would be different between PC and PD, and that children of PC would experience significant improvements in their behaviour. Methods: Data from a randomised controlled trial (RCT) involving 35 mothers and children aged 6–12 years old with behavioural problems who were enrolled in a parent training programme were examined. Child behaviour was measured using the Strength and Difficulties Questionnaire. Results: No significant differences were found between PC and PD in terms of the sociodemographic and clinical profiles, parental motivation, and pre- or post-intervention child behaviour. After programme completion, PC (n=27) reported improvements in all the behaviour subscales; total difficulties (p<0.001), emotional problem (p=0.004), conduct problem (p=0.001), hyperactivity symptoms (p<0.001), peer problems (p=0.036), and prosocial behaviour (p=0.001). Conclusion: The parent training programme produces significant child behaviour improvements in mothers who complete the programme. Nonetheless, the study has some limitations which restrict the generalizability of these findings.

Although parenting programs have been supported as an effective family-based intervention for children’s behavioral problems, they are underutilized in developing countries. This randomized controlled study aims to determine the effectiveness of the Incredible Years parenting program (IYPP) in improving behavioral problems in children, parenting stress, and parental mental health. Seventy mother–child dyads from three tertiary hospitals in Malaysia were divided into the IYPP and waitlist control groups. Weekly parent training sessions were adjusted during the pandemic period. Child’s total difficulty scores of the Strength and Difficulty Questionnaire (SDQ-TDS), Parental Stress Scale (PSS) scores, and parental DASS-21 scores were measured at pre- and post-intervention, and follow-up, and analyzed using generalized estimating equation (GEE). Compared to the control group at baseline, the intervention group showed a 4.2- and a 3.5-point significantly lower SDQ-TDS at 2 weeks post-intervention and 3 months follow-up, respectively (B = -4.20, 95 % CI: −6.68, −1.72, p = 0.001; B = -3.51, 95 % CI:-6.37, −0.66, p = 0.016), a 5.0-point significantly lower PSS at 3 months follow-up (B = -5.03, 95 % CI: −9.16, −0.90, p = 0.017), and a 4.1-point significantly lower general stress scores at 2 weeks post-intervention (B = -4.06, 95 % CI: −7.20, −0.92, p = 0.011). Effect sizes were small (ds = 0.28–0.40). There was no significant intervention effect on maternal anxiety and depression scores. The modified parenting program was effective in improving children’s behavior, parenting stress, and general stress among mothers of children aged 6–12 years presented with borderline and abnormal levels of behavioral problems, with sustained effects demonstrated for child behavior. However, the interpretation of these findings requires careful consideration of potential pandemic-instigated challenges and implications.