The whole article is here. Some interesting results:
93% have spoken prayer during their meetings 90% read from the Bible 89% spend time serving people outside of their group 87% devote time to sharing personal needs or experiences 85% spend time eating and talking before or after the meeting 83% discuss the teaching provided 76% have a formal teaching time 70% incorporate music or singing 58% have a prophecy or special word delivered 52% take an offering from participants that is given to ministries 51% share communion 41% watch a video presentation as part of the learning experience
Most house churches are family-oriented. Two out of every three house churches (64%) have children involved. Those churches are divided evenly between those who have the adults and children together throughout the meeting (41%) and those who keep them separated (38%). The remaining churches divide their time between having everyone together and having time when the children and adults are separated.
The average size of a house church is 20 people; in the home churches that include children, there is an average of about seven children under the age of 18 involved. The rapid growth in house church activity is evident in the fact that half of the people (54%) currently engaged in an independent home fellowship have been participating for less than three months. In total, three out of every four house church participants (75%) have been active in their current gathering for a year or less. One out of every five adults has been in their house church for three years or more.
Currently, just four out of every ten regular house church attenders (42%) rely exclusively upon a house church as their primary "church" experience.