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TABLE 5. Standardized mortality ratios for suicide* among breast implant patients and other plastic surgery patients relative to the general female population, by period of surgery, age at surgery, time since surgery, and follow-up interval, Ontario and Quebec, Canada, 1974–1997
Breast implant patients
Other plastic surgery patients
All patients combined

No. of deaths
 SMR{dagger}
 95% CI{dagger}
 No. of deaths
 SMR
 95% CI
 No. of deaths
 SMR
 95% CI
Period of surgery
    1974–1979 24 1.69 1.08, 2.52 13 1.50 0.80, 2.56 37 1.62 1.14, 2.23
    1980–1984 21 1.79 1.11, 2.74 16 1.98 1.13, 3.22 37 1.87 1.32, 2.58
    1985–1989 13 1.71 0.91, 2.93 4 0.90 0.24, 2.29 17 1.41 0.82, 2.26
Age at surgery (years)
    18–<30 21 1.77 1.09, 2.70 15 1.81 1.01, 2.98 36 1.78 1.25, 2.47
    30–<40 25 1.52 0.98, 2.25 13 1.65 0.88, 2.82 38 1.56 1.11, 2.15
    ≥40 12 2.31 1.19, 4.04 5 0.99 0.32, 2.31 17 1.66 0.97, 2.66
Time since surgery (years)
    1–<5 15 1.84 1.03, 3.03 8 1.52 0.66, 3.00 23 1.71 1.09, 2.57
    5–<10 21 1.81 1.12, 2.76 12 1.65 0.85, 2.87 33 1.75 1.20, 2.45
    ≥10 22 1.60 1.00, 2.43 13 1.49 0.79, 2.56 35 1.56 1.09, 2.17
Follow-up interval
    1974–1979 3 4.12 0.83, 12.05 1 2.12 0.03, 11.78 4 3.33 0.90, 8.54
    1980–1984 6 1.27 0.46, 2.77 9 2.97 1.36, 5.65 15 1.94 1.08, 3.20
    1985–1989 18 1.94 1.15, 3.07 7 1.16 0.47, 2.40 25 1.64 1.06, 2.42
    1990–1997 31 1.65 1.12, 2.34 16 1.37 0.78, 2.22 47 1.54 1.13, 2.05
Total
 58
 1.78
 1.31, 2.24
 33
 1.55
 1.07, 2.18
 91
 1.66
 1.34, 2.04

* Person-years of follow-up and deaths were accrued beginning 1 year after surgery.

{dagger} SMR, standardized mortality ratio; CI, confidence interval.





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