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Table 1 Alternate versions of enabling factors (coverage for chiropractic and costs per visit) to be tested

From: Predictors of visit frequency for patients using ongoing chiropractic care for chronic low back and chronic neck pain; analysis of observational data

 Chronic Low Back Pain1Chronic Neck Pain1
No coverage (n = 218)Some coverage (n = 590)No coverage (n = 202)Some coverage (n = 475)
Mean (SD) # chiropractic visits/month2.0 (1.6)2.4 (2.4)2.3 (2.1)2.2 (2.0)
Enabling factors
 Insurance with caps on visits or costs291 (49.3%)244 (51.4%)
 Insurance with no caps85 (14.4%)68 (14.3%)
 Insurance with unknown caps214 (36.3%)163 (34.3%)
Out-of-pocket costs per visit*
 Unknown / $00 (0.0%)67 (11.4%)0 (0.0%)69 (14.5%)
 $1 to $200 (0.0%)227 (38.5%)0 (0.0%)148 (31.2%)
 $21 to $4014 (6.4%)195 (33.1%)19 (9.4%)175 (36.8%)
 $41 to $60101 (46.3%)65 (11.0%)89 (44.1%)51 (10.7%)
 $61 to $8071 (32.6%)18 (3.1%)72 (35.6%)18 (3.8%)
 $81+32 (14.7%)18 (3.1%)22 (10.9%)14 (2.9%)
  1. 1Data on insurance status were not available for a small percentage of patients in each sample: 44 (5.2%) for chronic low back pain and 28 (4.0%) for chronic neck pain
  2. *Out-of-pocket costs differ significantly between those with and without some chiropractic coverage for both those with chronic low back pain and chronic neck pain, p < .001