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. 2020 Dec 14;28:68. doi: 10.1186/s12998-020-00356-z

Table 1.

Sample Characteristics [N = 25,621 unique patients]

Cohort of Providers Mean Age in Years by Gender Gender (% Female) Health Plan‡ Region (Urban vs. Rural)† Primary Dx*
ChiroCare Network (CC) (22,066 patients) 47 (females) 48 (males) 55% (n = 12,079)

70% Private

30% Public

65% (Urban)

32% (Rural)

3% (Missing)

85% Biomechanical Lesions

9% Other Dorsopathies

3% Sprains

3% Strains

Centers of Excellence (3555 patients)

48 (females

49 (males)

59% (n = 2079)

68% Private

32%Public

86% (Urban)

14% (Rural)

78% Biomechanical Lesions

14% Other Dorsopathies

6% Sprains

2% Strains

Note. the ‘Over 90’ age category is not reflected in patient mean age; ‡ Significant difference in Health Plan between the two Cohorts χ2 = 8.34, p = .004; †Significant difference between the two Cohorts on Region; χ2 = 533.9, p < .001; *Significant difference between the two Cohorts on Primary Dx (based on first visit) χ2 = 139.67, p < .001