Table 3.
2008a n = 6,615b n = 336,822,936c % |
2015a n = 6,555b n = 298,516,838c % |
8-Year Trend, Percentage Point Changed (95% CI) |
|
---|---|---|---|
Total population | 61.9 | 56.7 | −6.0 (−12.4 to 0.46) |
Patient characteristics | |||
Age, y | |||
18-24 | 42.7 | 37.5 | −6.0 (−18.0 to 6.9) |
25-44 | 52.8 | 48.2 | −5.2 (−13.0 to 2.6) |
44-64 | 62.3 | 58.9 | −4.2 (−10.5 to 2.1) |
≥65 | 72.3 | 62.9 | −10.4 (−15.5 to –5.2) |
Chronic conditions, no | |||
0 | 45.6 | 40.3 | −5.7 (−14.9 to 3.4) |
1-2 | 65.3 | 57.9 | −7.5 (−13.2 to –1.9) |
3-5 | 75.7 | 67.3 | −9.7 (−16.7 to –2.6) |
6-10 | 80.5 | 71.7 | −6.1 (−12.6 to 0.4) |
Visit type | |||
Preventive visit | 49.5 | 55.0 | 3.6 (−5.7 to 13.0) |
Acute visitse | |||
Upper respiratory infection | 38.7 | 32.8 | −4.9 (−19.0 to 9.2) |
Urinary tract infection | 43.0 | 28.0 | −12.3 (−35.4 to 10.7) |
Allergic rhinitis | 49.8 | 61.4 | 3.3 (−12.8 to 19.4) |
Joint pain | 52.9 | 50.0 | −4.2 (−11.5 to 3.1) |
Back pain | 58.8 | 53.0 | −5.3 (−10.3 to –0.4) |
Headache | 53.5 | 52.1 | −1.9 (−5.1 to 1.3) |
Chronic condition visitse | |||
Hypertension | 82.4 | 74.0 | −10.2 (−14.1 to –6.4) |
Type 2 diabetes | 74.6 | 64.0 | −8.3 (−13.0 to –3.6) |
Mental illness | 82.0 | 76.4 | −12.2 (−18.7 to –5.7) |
NACMS = National Ambulatory Medical Care Survey.
Data as 3-year rolling averages.
Unweighted number of NAMCS visits.
Weighted number of NAMCS visits.
8-year trend calculated for each subgroup by multiplying per-year regression coefficient across study period.
Diagnosis groups created by authors for analysis (see Supplemental Appendix, http://www.AnnFamMed.org/content/17/6/538/suppl/DC1).