Table 4.

Age- and Sex-Standardized Rates of Angina and 95% Confidence Intervals Among Adults Aged ≥40 Years by Time Period: NHANES, 1988 to 2012 (United States)

Angina	NHANES III	2001–2004	2005–2008	2009–2012
Angina symptoms (Rose questionnaire)
Non-Hispanic White	4.0 (3.5–4.7)	3.3 (2.7–4.1)	3.0 (2.4–3.6)	2.1 (1.6–2.7)*
Non-Hispanic Black	4.9 (4.1–5.9)	5.0 (3.7–6.9)	5.0 (4.1–6.0)	4.4 (3.6–5.4)
Medical history (doctor told them they had angina)
Non-Hispanic White	…	5.2 (4.4–6.3)	3.7 (3.0–4.5)	3.4 (2.7–4.2)†
Non-Hispanic Black	…	2.6 (1.9–3.4)	2.8 (2.1–3.8)	2.7 (1.9–3.8)

NHANES indicates National Health and Nutrition Examination Survey.

^*Percentages declined in a statistically significant linear fashion over time (P<0.0001).

^†Percentages declined in a statistically significant linear fashion over time (P<0.01).