individual employees’ job titles. All employees were invited to
complete the online survey.3,4 Questions were built on a taxonomy
of essential PH work (Appendix A).5 Each employee was asked to
indicate from a list of (1) 44 tasks, assigned to him or her as part of
normal work; (2) 53 knowledge items, for which he or she
possessed better than average knowledge; and (3) 54 resources,
readily available when needed for daily work.