TABLE 3. Observed and expected* numbers of deaths, standardized mortality ratios, and 95% confidence intervals for plastic surgery patients, Ontario and Quebec, Canada, 1974–1997
Cause of death
|
ICD-9 codes
|
Observed
|
Expected
|
SMR
|
95% CI
|
|
| All causes |
|
383 |
564.7 |
0.68 |
0.61, 0.75 |
| Infectious diseases |
1–139 |
4 |
6.3 |
0.63 |
0.17, 1.62 |
| Endocrine diseases |
240–279 |
5 |
17.6 |
0.28 |
0.09, 0.66 |
| Mental disorders |
290–319 |
4 |
4.6 |
0.87 |
0.23, 2.22 |
| Nervous system diseases |
320–389 |
4 |
15.5 |
0.26 |
0.07, 0.66 |
| Circulatory diseases |
390–459 |
76 |
140.5 |
0.54 |
0.43, 0.68 |
| Coronary heart |
410–414, 429.2 |
35 |
76.8 |
0.46 |
0.32, 0.63 |
| Cerebrovascular |
430–438 |
20 |
30.0 |
0.67 |
0.41, 1.03 |
| Respiratory diseases |
460–519 |
15 |
27.0 |
0.55 |
0.31, 0.92 |
| Digestive diseases |
520–579 |
7 |
20.6 |
0.34 |
0.14, 0.70 |
| Cancer |
140–208 (excluding 173) |
194 |
254.8 |
0.76 |
0.66, 0.88 |
| Breast |
174 |
40 |
64.0 |
0.62 |
0.45, 0.85 |
| Brain |
191 |
10 |
8.3 |
1.21 |
0.58, 2.22 |
| Genital |
179–184 |
16 |
27.1 |
0.59 |
0.34, 0.96 |
| Colorectal |
153–154 |
14 |
21.2 |
0.66 |
0.36, 1.11 |
| Bronchus and lung |
162.2–5, .8, .9 |
60 |
53.8 |
1.12 |
0.85, 1.44 |
| Injuries |
800–999 |
63 |
55.4 |
1.14 |
0.87, 1.46 |
| Suicide |
950–959 |
33 |
21.2 |
1.55 |
1.07, 2.18 |
| Other |
800–949, 960–999 |
30 |
34.1 |
0.88 |
0.59, 1.26 |
Other deaths
|
Those not included above
|
11
|
22.4
|
0.49
|
0.24, 0.88
|
|
* Person-years of follow-up and deaths were accrued beginning 1 year after surgery; expected numbers of deaths were calculated by multiplying age, period of surgery, and cause-specific female mortality rates for Ontario and Quebec by the corresponding number of person-years of follow-up observed in the cohort.
ICD-9, International Classification of Diseases, Ninth Revision; SMR, standardized mortality ratio; CI, confidence interval.
