Table 2.

Demographic Characteristics of People Aged ≥40 Years With a Medical History of Angina (Doctor Told They Had Angina), Weighted Number of People With Angina, Percentage, and 95% CIs by Time Period: NHANES, 1988 to 2012

	NHANES-III		2001–2004		2005–2008		2009–2012
Characteristics	n	% (95% CI)	n	% (95% CI)	n	% (95% CI)	n	% (95% CI)
Age, y
40–64	…	…	117	44.0 (36.7–51.6)	123	41.2 (34.9–47.9)	104	44.8 (35.4–54.5)
65+	…	…	285	56.0 (48.4–63.3)	187	58.8 (52.1–65.1)	172	55.2 (45.5–64.6)
Total	…	…	402	100.00	310	100.00	276	100.00
Sex
Women	…	…	196	49.6 (43.2–56.1)	144	47.9 (40.9–55.0)	126	48.1 (40.2–56.1)
Men	…	…	206	50.4 (44.0–56.8)	166	52.1 (45.0–59.1)	150	51.9 (43.9–59.8)
Total	…	…	402	100.00	310	100.00	276	100.00
Race
Non-Hispanic white	…	…	289	84.6 (79.4–88.7)	198	79.7 (72.2–85.7)	155	79.5 (71.9–85.5)
Non-Hispanic black	…	…	35	4.8 (3.2–7.2)	45	8.0 (5.3–11.8)	48	8.5 (5.6–12.7)
Other	…	…	78	10.6 (6.8–16.1)	67	12.2 (8.0–18.3)	73	12 (8.1–17.4)
Total	…	…	402	100.00	310	100.00	276	100.00

CI indicates confidence interval; and NHANES, National Health and Nutrition Examination Survey.