Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
PMC full text:
J Manipulative Physiol Ther. Author manuscript; available in PMC 2013 Mar 2.
Published in final edited form as:
J Manipulative Physiol Ther. 2012 Mar; 35(3): 168–175.
Published online 2012 Mar 2. doi:  10.1016/j.jmpt.2012.01.011
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Table 1

Distribution of episode length, and number of visits to chiropractors and other healthcare providers by episode definition.
Episode
Definition 1:
Starts with a
chiropractic
visit and ends
60 days
thereafter		Episode Definition
2:
Starts with a
chiropractic visit
and ends 60 days
thereafter,
or when a 14-day
gap occurs,
whichever comes
first		Episode Definition
3:
Starts with a
chiropractic visit or
a CSC visit to a
non-chiropractor
and ends 60 days
thereafter		Episode Definition
4:
Starts with a
chiropractic visit or
a CSC visit to a
non-chiropractor
and ends 60 days
thereafter, or when
a 14-day gap
occurs, whichever
comes first
Mean episode length in days
(SD)		28.93 (22.24)5.59 (12.81)22.75 (22.82)4.69 (11.18)
Proportion of episodes
involving only a chiropractor
(SD)		0.891 (0.31)0.954 (0.209)0.374 (0.484)0.456 (0.498)
Proportion of episodes with
both chiropractic and nonchiropractic
providers (SD)		0.109 (0.312)0.046 (0.208)0.099 (0.299)0.049 (0.217)
Proportion of episodes with:
primary care providers (SD)0.060 (0.238)0.025 (0.158)0.051 (0.219)0.024 (0.152)
diagnostic radiologists (SD)0.050 (0.037)0.023 (0.149)0.037 (0.188)0.019 (0.135)
orthopedists (SD)0.024 (0.154)0.010 (0.100)0.024 (0.049)0.013 (0.111)
anesthesiologists (SD)0.009 (0.095)0.003 (0.059)0.006 (0.081)0.004 (0.059)
physical therapists (SD)0.001 (0.037)0.000 (0.019)0.002 (0.049)0.001 (0.037)
Mean number of chiropractic
visits in an episode (SD)		2.82 (2.46)1.79 (2.11)1.32 (2.13)0.88 (1.65)
Mean number of CSC visits in
an episode (SD)		0.13 (0.94)0.05 (0.74)1.18 (2.16)0.81 (1.72)
Proportion of episodes with
any non-chiropractic visit 14
days prior to the chiropractic
index visit (SD)		0.039 (0.195)0.027 (0.164)N/AN/A