Article Figures & Tables
Figures
- Figure 1
Prevalence of hypertension and diabetes in Alberta from 2002 to 2013. APPROACH = Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease database, DAD = Canadian hospital Discharge Abstract Database.
- Figure 2
Validity of coding for hypertension and diabetes in the Discharge Abstract Database from 2002 to 2013, with the APPROACH database as a reference standard. NPV = negative predictive value, PPV = positive predictive value.
Tables
- Table 1: Characteristics of patients who underwent coronary artery cauterization in Alberta in 2002 and 2013
Characteristic Year; no. (%) of patients* Absolute change between 2002 and 2013
(95% CI)2002
(n = 4001)2013
(n = 5580)Age, mean ± SD, yr 63.8 ± 12.3 62.6 ± 14.8 -1.2 (-1.7 to -0.6) Men 2795 (69.9) 3935 (70.5) 0.6 (-1.2 to 2.5) 0.6% Location Calgary 1924 (48.1) 2300 (41.2) -6.9 (-8.9 to -4.9) Edmonton 1706 (42.6) 2633 (47.2) 4.6 (2.5 to 6.6) Comorbid condition APPROACH DAD APPROACH DAD APPROACH DAD Hyperlipidemia 2779 (69.4) 1912 (47.8) 3393 (60.8) 660 (11.8) -8.7 (-10.6 to -6.8) -36.0 (-37.7 to -34.2) Heart failure 456 (11.4) 730 (18.2) 449 (8.0) 985 (17.6) -3.3 (-4.6 to -2.2) -0.6 (-2.2 to 1.0) Cerebrovascular disease 234 (5.8) 150 (3.7) 253 (4.5) 98 (1.8) -1.3 (-2.2 to -0.4) -2.0 (-2.7 to -1.3) Peripheral vascular disease 290 (7.2) 250 (6.2) 159 (2.8) 360 (6.4) -4.4 (-5.3 to -3.5) 0.2 (-0.8 to 1.2) Chronic obstructive pulmonary disease 552 (13.8) 434 (10.8) 800 (14.3) 512 (9.2) 0.6 (-0.9 to 1.9) -1.7 (-2.9 to -0.4) Note: APPROACH = Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease database, CI = confidence interval, DAD = Canadian hospital Discharge Abstract Database.
*Except where noted otherwise.
Condition; variable Year; prevalence, % Absolute change between 2002 and 2013
(95% CI)*2002 2013 APPROACH DAD APPROACH DAD APPROACH DAD Hypertension 55.8 54.9 57.4 57.8 1.6 (-0.4 to 3.6) 2.9 (0.9 to 4.9) Age, yr 18-64 48.5 47.3 49.1 49.2 0.6 (-2.2 to 3.4) 1.9 (-0.9 to 4.7) ≥ 65 63.5 62.9 67.7 68.4 4.2 (1.4 to 7.0) 5.6 (2.8 to 8.4) Sex Male 53.5 53.2 56.1 56.7 2.6 (0.2 to 5.0) 3.5 (1.1 to 5.9) Female 61.1 58.9 60.4 60.4 -0.7 (-4.3 to 2.9) 1.5 (-2.2 to 5.1) City Calgary 54.5 55.6 56.4 56.1 1.9 (-1.1 to 4.9) 0.6 (-2.4 to 3.6) Edmonton 56.9 57.4 55.4 60.7 -1.5 (-4.5 to 1.5) 3.2 (0.2 to 6.2) Diabetes 23.5 23.9 23.6 26.0 0.1 (-1.6 to 1.8) 2.1 (0.4 to 3.9) Age, yr 18-64 19.5 20.3 19.6 22.2 0.04 (-2.2 to 2.3) 1.9 (-0.4 to 4.2) ≥ 65 27.6 27.7 28.6 30.7 1.0 (-1.7 to 3.6) 3.1 (0.4 to 5.8) Sex Male 22.6 23.0 22.8 25.7 0.2 (-1.8 to 2.2) 2.7 (0.6 to 4.7) Female 25.4 26.0 25.3 26.8 0.02 (-3.3 to 3.2) 0.9 (-2.4 to 4.1) City Calgary 24.0 24.4 22.8 26.4 -1.2 (-3.8 to 1.4) 2.0 (-0.6 to 4.6) Edmonton 22.8 24.0 23.0 25.3 0.2 (-2.4 to 2.7) 1.3 (-1.4 to 3.9) Note: APPROACH = Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease database, CI = confidence interval, DAD = Canadian hospital Discharge Abstract Database.
*Minor discrepancies are due to rounding.
Year; variable Sensitivity, %
(95% CI)Specificity, %
(95% CI)Positive predictive value, %
(95% CI)Negative predictive value, %
(95% CI)κ(95% CI) 2002 82.2 (79.9-84.5) 79.6 (76.9-82.3) 83.6 (81.3-85.8) 78.0 (75.3-80.7) 0.62 (0.59-0.64) 2003 74.6 (72.5-76.7) 79.8 (77.3-82.3) 85.9 (84.1-87.7) 65.5 (62.9-68.2) 0.52 (0.50-0.54) 2004 77.1 (75.1-79.1) 78.1 (75.6-80.6) 84.4 (82.6-86.3) 68.9 (66.3-71.5) 0.54 (0.52-0.56) 2005 75.5 (73.5-77.6) 80.9 (78.4-83.3) 87.0 (85.3-88.7) 66.1 (63.4-68.7) 0.54 (0.52-0.56) 2006 79.5 (77.5-81.5) 78.8 (76.3-81.3) 85.0 (83.2-86.9) 71.7 (69.1-74.4) 0.57 (0.55-0.60) 2007 78.5 (76.4-80.6) 71.9 (69.1-74.6) 80.5 (78.4-82.5) 69.3 (66.5-72.1) 0.50 (0.48-0.52) 2008 80.0 (77.9-82.0) 74.0 (71.3-76.7) 81.9 (79.9-83.9) 71.5 (68.7-74.3) 0.54 (0.51-0.56) 2009 79.3 (77.2-81.4) 74.5 (71.7-77.2) 81.9 (79.9-84.0) 71.1 (68.3-73.8) 0.53 (0.51-0.56) 2010 81.8 (79.8-83.7) 72.1 (69.3-74.8) 81.2 (79.2-83.1) 72.9 (70.1-75.6) 0.54 (0.52-0.56) 2011 80.8 (78.8-82.9) 71.2 (68.4-73.9) 79.4 (77.3-81.4) 73.0 (70.3-75.7) 0.52 (0.50-0.55) 2012 82.5 (80.6-84.4) 71.0 (68.3-73.7) 79.8 (77.8-81.7) 74.5 (71.9-77.1) 0.54 (0.52-0.56) 2013 79.8 (77.8-81.8) 71.9 (69.3-74.5) 79.3 (77.3-81.3) 72.5 (70.0-75.1) 0.52 (0.49-0.54) Age, yr 18-64 76.9 (73.9-79.9) 77.6 (74.6-80.5) 76.8 (73.8-79.8) 77.7 (74.7-80.6) 0.54 (0.52-0.57) ≥ 65 82.4 (79.8-85.0) 60.8 (56.0-65.7) 81.5 (78.8-84.1) 62.3 (57.4-67.1) 0.43 (0.40-0.47) Sex Male 79.2 (76.8-81.6) 72.1 (69.1-75.2) 78.4 (76.0-80.9) 73.1 (70.1-76.1) 0.51 (0.49-0.54) Female 81.1 (77.6-84.6) 71.3 (66.3-76.3) 81.2 (77.7-84.6) 71.2 (66.2-76.1) 0.52 (0.48-0.57) City Calgary 76.3 (73.0-79.7) 70.1 (66.0-74.1) 76.8 (73.5-80.1) 69.6 (65.5-73.6) 0.46 (0.43-0.50) Edmonton 86.5 (84.0-89.0) 71.5 (67.8-75.2) 79.0 (76.2-81.9) 81.0 (77.6-84.4) 0.59 (0.55-0.62) Note: CI = confidence interval.
*With the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease database as the reference standard.
Year; variable Sensitivity, % (95% CI) Specificity, % (95% CI) Positive predictive value, % (95% CI) Negative predictive value, % (95% CI) κ (95% CI) 2002 92.1 (89.7-94.6) 97.0 (96.2-97.9) 90.5 (87.8-93.1) 97.6 (96.8-98.4) 0.89 (0.87-0.90) 2003 89.6 (87.2-92.0) 96.3 (95.5-97.2) 88.2 (85.6-90.7) 96.8 (96.0-97.6) 0.85 (0.84-0.87) 2004 83.8 (80.8-86.7) 96.7 (95.9-97.4) 87.5 (84.7-90.2) 95.5 (94.7-96.4) 0.82 (0.80-0.84) 2005 81.5 (78.5-84.5) 96.6 (95.8-97.4) 87.9 (85.3-90.6) 94.5 (93.5-95.4) 0.80 (0.78-0.82) 2006 88.9 (86.4-91.5) 96.6 (95.8-97.4) 88.1 (85.5-90.7) 96.8 (96.1-97.6) 0.85 (0.84-0.87) 2007 91.1 (88.8-93.5) 95.4 (94.4-96.3) 85.6 (82.9-88.4) 97.3 (96.5-98.0) 0.85 (0.83-0.86) 2008 90.8 (88.4-93.3) 95.5 (94.6-96.5) 85.2 (82.3-88.1) 97.4 (96.6-98.1) 0.84 (0.83-0.86) 2009 90.7 (88.3-93.1) 95.0 (94.0-96.0) 84.6 (81.8-87.5) 97.1 (96.3-97.9) 0.84 (0.82-0.85) 2010 91.8 (89.5-94.0) 95.4 (94.5-96.4) 85.3 (82.5-88.1) 97.6 (96.9-98.3) 0.85 (0.83-0.87) 2011 91.4 (89.1-93.7) 93.9 (92.9-95.0) 81.5 (78.5-84.5) 97.4 (96.7-98.1) 0.82 (0.80-0.84) 2012 91.6 (89.4-93.8) 93.9 (92.9-95.0) 81.4 (78.5-84.3) 97.5 (96.8-98.2) 0.82 (0.80-0.84) 2013 90.7 (88.5-93.0) 94.0 (93.0-95.0) 82.3 (79.5-85.1) 97.0 (96.3-97.8) 0.82 (0.80-0.84) Age, yr 18-64 89.4 (85.9-92.9) 94.2 (92.9-95.5) 78.9 (74.5-83.3) 97.3 (96.4-98.3) 0.80 (0.77-0.82) ≥ 65 91.8 (88.9-94.7) 93.7 (92.1-95.3) 85.3 (81.8-88.9) 96.6 (95.4-97.8) 0.84 (0.81-0.86) Sex Male 91.8 (89.2-94.3) 93.9 (92.7-95.1) 81.7 (78.3-85.1) 97.5 (96.7-98.3) 0.82 (0.80-0.84) Female 88.5 (84.1-92.9) 94.1 (92.3-96.0) 83.7 (78.7-88.6) 96.0 (94.4-97.6) 0.81 (0.78-0.84) City Calgary 91.6 (88.2-95.0) 92.8 (91.1-94.6) 79.1 (74.5-83.7) 97.4 (96.3-98.5) 0.80 (0.77-0.83) Edmonton 91.7 (88.6-94.9) 94.5 (93.1-95.9) 83.3 (79.3-87.4) 97.5 (96.5-98.5) 0.83 (0.81-0.86) Note: CI = confidence interval.
*With the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease database as the reference standard.
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Validity of Canadian discharge abstract data for hypertension and diabetes from 2002 to 2013
