Table 2:

Temporal trends in rates of various types of preoperative testing from 2008/09 to 2012/13

Type of testing and yearProcedure; % of cases with preoperative test (95% CI)
EndoscopyOphthalmologic surgeryLow-risk surgeryOverall
Electrocardiography
2008/0915.7 (15.6–15.9)42.4 (42.1–42.6)54.1 (53.8–54.3)34.5 (34.3–34.6)
2009/1016.0 (15.8–16.1)39.3 (39.1–39.6)54.9 (54.6–55.1)33.9 (33.8–34.1)
2010/1115.2 (15.0–15.4)30.5 (30.3–30.7)55.5 (55.2–55.8)30.7 (30.6–30.8)
2011/1214.6 (14.5–14.8)23.8 (23.6–24.0)55.7 (55.4–56.0)28.4 (28.2–28.5)
2012/1313.5 (13.3–13.7)21.9 (21.6–22.1)52.8 (52.5–53.1)26.9 (26.7–27.0)
All years15.1 (15.0–15.2)32.0 (31.9–32.1)54.6 (54.5–54.7)31.0 (30.9–31.1)
Echocardiography*
2008/092.4 (2.4–2.5)3.1 (3.0–3.2)2.5 (2.5–2.6)2.7 (2.7–2.7)
2009/102.7 (2.6–2.8)3.4 (3.4–3.5)2.6 (2.5–2.7)2.9 (2.9–3.0)
2010/112.7 (2.6–2.8)3.2 (3.1–3.3)2.9 (2.8–3.0)2.9 (2.9–3.0)
2011/122.8 (2.7–2.9)3.3 (3.2–3.4)2.9 (2.8–3.0)3.0 (2.9–3.0)
2012/132.8 (2.7–2.9)3.1 (3.0–3.2)2.8 (2.7–2.9)2.9 (2.8–3.0)
All years2.7 (2.7–2.7)3.2 (3.2–3.2)2.7 (2.7–2.7)2.9 (2.9–2.9)
Stress test
2008/092.1 (2.0–2.1)1.8 (1.7–1.9)1.9 (1.9–2.0)1.9 (1.9–2.0)
2009/102.2 (2.2–2.3)1.8 (1.7–1.9)2.3 (2.2–2.4)2.1 (2.1–2.1)
2010/112.3 (2.2–2.4)1.8 (1.7–1.8)2.6 (2.5–2.7)2.2 (2.2–2.2)
2011/122.3 (2.2–2.3)1.8 (1.7–1.9)2.7 (2.6–2.8)2.2 (2.2–2.3)
2012/132.2 (2.1–2.3)1.8 (1.7–1.8)2.8 (2.7–2.9)2.2 (2.2–2.3)
All years2.2 (2.2–2.2)1.8 (1.8–1.8)2.5 (2.5–2.5)2.1 (2.1–2.1)
Chest radiography
2008/098.9 (8.8–9.1)7.4 (7.2–7.5)19.9 (19.7–20.2)11.1 (11.0–11.2)
2009/109.2 (9.1–9.4)7.2 (7.1–7.3)20.0 (19.8–20.2)11.3 (11.2–11.4)
2010/119.0 (8.9–9.2)6.6 (6.5–6.7)19.4 (19.2–19.6)10.8 (10.7–10.9)
2011/128.8 (8.7–9.0)6.0 (5.9–6.1)18.6 (18.4–18.8)10.4 (10.3–10.5)
2012/138.8 (8.6–8.9)5.9 (5.8–6.1)17.1 (16.9–17.3)10.1 (10.0–10.2)
All years9.0 (8.9–9.1)6.7 (6.6–6.8)19.0 (18.9–19.1)10.8 (10.8–10.8)
  • Note: CI = confidence interval.

  • * Transthoracic echocardiography.