From the abstract: This longitudinal study evaluated changes in self-rated health status of patient receiving chiropractic care at the training clinic of the New Zealand School of Chiropractic. The study was designed to assess subluxation-based chiropractic care in association with changes in patients' perceived health status. The Self-Rated Health/Wellness Survey (SRHW) was used to evaluate the health status on two occasions, "initial" and "follow-up." The instrument assessed health across four domains, Physical State, Emotional/Mental State, Stress and Life Enjoyment. Collectively, these four domains, assessed initially and after a follow-up period, constituted Combined Wellness, or a fifth domain. Quality of Life was evaluated as a sixth domain of the questionnaire instrument.
The study population included 89 subjects, evaluated over a five-month study period. The average interval between initial and follow-up surveys was 8.0+/- 3.2 weeks, with an average number of visits of 9.1 +/- 4.2. A bivariate analysis was conducted using a two tailed, paired, sample t-test to assess the subjects' survey responses. Subjects reported significant positive perceived changes in Physical State (p=0.000) Mental/Emotional State (p=0.008), and Combined Wellness (p=0.001), with corresponding effect sizes of 0.61, 0.24 and 0.31 respectively. The improvement in the Physical and Mental/Emotional State, and Combined Wellness suggests that chiropractic care provided through the NZ School of Chiropractic is associated with significant benefits in these domains.
Study data suggested that health/ wellness may accrue with time under care. Thus, further study with a larger sample size and longer duration of care is proposed to more thoroughly investigate possible health benefits in the areas studied, as well as to confirm present findings.
Mark J. Marino and Phillippa M. Langrell. Journal of Vertebral Subluxation Research ~ Volume 3 ~ Number 2 ~ Pages 1-9. Abstract