Another important limitation to the interpretation and generalisability of our findings is the non-randomised assignment of workers to intervention and comparison factories, due to ethical and logistical constraints.
The study teams comprising of community health workers for intervention delivery and field workers for independent data collection were hired from the local community and were trained on data collection instruments and study methodology.
Approximately, one month before the first working group meeting, all workers of the intervention departments of concern and those of the matched control departments, receive the baseline questionnaire.
Third, all workers of the intervention and control departments are asked: 1) if they are aware of prioritised ergonomic measures and whether the ergonomic measures are implemented at the department; 2) if they actually use the ergonomic measures; and 3) about the perceived effectiveness of the implemented ergonomic measures on LBP and NP prevention.
It also assessed the opinion of the same healthcare workers on availability of intervention facilities, training facilities for professionals and law caring for the needs and rights of children with childhood autism and other developmental disorders in Nigeria.
Using the standard CES-D cut-off score of 16, 23% of workers at the intervention factory reported clinical levels of depressive symptoms compared to 40% of workers at the comparison factory (p=0.010).
After a child with developmental delay has undergone the evaluation and diagnosis procedures of a medical unit and developmental delay has been determined, social workers of various Early Intervention Reporting Referral Center will recommend appropriate intervention unit according to the comprehensive evaluation report issued by the hospital and the needs of the child and his/her family.
Using a more conservative CES-D cut-off score of 20, 17% of workers at the intervention factory and 29% of workers at the comparison factory reported clinical levels of depressive symptoms (p=0.053).
As part of their ongoing partnership with Network Rail, the British Transport Police and the wider rail industry through their Small Talk Saves Lives campaign, they've trained thousands of railway workers in intervention skills with people who may be about to commit suicide.
Although participation of blue-collar workers in intervention studies is usually low [ 29], 84% of the construction workers approached in the present study were willing to participate in the intervention.
Table 4 showed the frequency and percentage distributions of healthcare workers' opinions on availability of intervention facilities, training facilities for professionals and law caring for the needs and rights of children with childhood autism and other developmental disorders in Nigeria.
