This study covered an extended period of time, and our study group consisted of very old people, who were difficult to involve in a long running investigation.
"We have to be connected at a certain level," says Lee, "and without that sort of emotional connection it is very difficult to be involved and be happy with the songs, to be of the moment and actually be the song itself".
Berkoben echoed the frustration expressed by Orkin: "It is very difficult to get postdocs involved".
We felt that staff would be more reluctant to voice individual concerns in a group from the same care home, and that it would be very difficult to arrange groups involving several care homes.
Among 548 employed respondents in one study, 15% reported time lost from paid work and 45% reported reduced work productivity.[ 11] The economic cost of chronic pain to society is very difficult to calculate as it involves various sectors, both public and private.
On the camera footage it's very difficult to say how many were involved – maybe a hundred.
It was a massive wrench because politics had been my life and I found not being involved very difficult to cope with.
The problem is that exercise is such a complicated physiological stimulus that it's very difficult to isolate which compounds are involved and what their effects might be.
"If it is a subsidiary, even if not 100 percent owned, it is very difficult to say Eni is not involved, " said N.Craig Smith, who holds the ethics chair at the Insead business school in Fontainebleau, France.
It is very difficult to develop a comprehensive model involving all the parameters.
