Case-control study of prostate cancer in black patients in Soweto, South Africa
1992

Prostate Cancer in Black Patients in Soweto

Sample size: 166 publication Evidence: moderate

Author Information

Author(s): A.R.P. Walker, B.F. Walker, N.G. Tsotetsi, C. Sebitsol, D. Siwedi, A.J. Walker

Primary Institution: University of the Witwatersrand

Hypothesis

What are the risk factors for prostate cancer in black patients living in urban Soweto?

Conclusion

The study found that high consumption of meat and eggs are risk factors for prostate cancer, while high consumption of vegetables and fruits are protective.

Supporting Evidence

  • High fat intake was associated with increased risk of prostate cancer.
  • Patients with extended exposure to a Western diet had higher rates of prostate cancer.
  • Consumption of vegetables and fruits was found to be protective against prostate cancer.

Takeaway

This study looked at black men in Soweto to see what might cause prostate cancer. They found that eating a lot of meat and eggs can increase the risk, while eating more fruits and vegetables can help protect against it.

Methodology

A case-control study was conducted with 166 black patients with prostate cancer and 166 matched controls, gathering data through questionnaires and hospital records.

Potential Biases

Potential biases due to incomplete records and reliance on self-reported data.

Limitations

Data reliability was lower than that from developed countries, and about a quarter of participants were illiterate or near illiterate.

Participant Demographics

Participants were black men from Soweto, with a mean age of 69.2 years.

Statistical Information

P-Value

p<0.05

Confidence Interval

95% CI

Statistical Significance

p<0.05

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