[5] In 1973 Bowen himself had referred to his ability to "average 65 patients per day", yet the technique as it is commonly practiced today is unlikely to achieve that volume.
[5] The technique has been popularized by some of the six men who observed him at work, including Oswald Rentsch, an osteopath[6] whose interpretation has become the dominant, but not unchallenged, form.
[9] The therapy's distinctive features are the minimal nature of the physical intervention and pauses incorporated in the treatment.
[3] In 2015, the Australian Government's Department of Health published the results of a review of alternative therapies that sought to determine if any were suitable for being covered by health insurance; Bowen Technique was one of 17 therapies evaluated for which no clear evidence of effectiveness was found.
[1] Quackwatch includes "Neuro-Structural Integration Technique (Bowen Therapy)" in its list of "questionable treatments.