The suffix mäßig is relatively frequently used to form adjectives. It has the meaning of wie in comparisons (e.g. heldenmäßig), or it generally means in Bezug auf (e.g. altersmäßig). It can very freely be added to all kinds of nouns.
e-deletion: Most nouns ending in an unstressed e are not directly combined with mäßig (the linking element en is inserted, see below). When the suffix is directly added to the noun, the unstressed e is deleted:
Exceptions: foreign nouns such as routinemäßig, usancemäßig.
With linking element:
Often, a linking element is inserted between the noun stem and the suffix. The most frequently used linking elements are en and s: