Children younger than five don't yawn any more often when watching videos of yawns than they would normally.
From 1980 to 2001, all of the net growth in American employment came from firms younger than five years old.
"This vaccine could potentially prevent up to 4,000 cases of meningococcal disease in children younger than five years in the UK.
The presence of a child younger than five in household reduces the chance of being in work.
In some, mainly sub-Saharan countries, the total number of deaths of children younger than five increased in 2001.
There is controversy regarding the effectiveness of chest physiotherapy to solve airway obstruction problems experienced by children younger than five years of age with pneumonia.
Diarrhoea has been one of the major causes of hospital attendance in Ghana, and 16% deaths of children younger than five years in African (Bruce et al. 2005).
Considering that most forest carbon standards are younger than five years, those that define standards must convince actors to apply them by showing and communicating their effectiveness and their legitimacy.
Figure 1 shows how the proportion of employed mothers with children younger than five years of age using grandparents as their primary source of childcare has steadily increased from 15 to 20percentt in the last two decades.
We also control for the following child, parent, and household characteristics: age, gender, number of children younger than five in the household, parents' highest level of education, location (urban/rural), ethnicity, presence of a disability, number of migrants, and wealth.
At present, most companies in the private sector are early stage start-ups that involved heavily in R&D rather than commercialization, many of them younger than five years old.
