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Consumption of spicy foods and total and cause specific mortality: population based cohort study

BMJ 2015; 351 doi: https://doi.org/10.1136/bmj.h3942 (Published 04 August 2015) Cite this as: BMJ 2015;351:h3942

Re: Consumption of Spicy foods in China may be a surrogate of regional differences in diet, lifestyle and environment

Thank you for the thoughtful comments. Indeed we have noted geographical variations and carefully controlled for the "center effect" due to multiple survey sites on the hazard function by stratifying on the survey site variable in the Cox model (stratified model). We have also adjusted the survey site variable in the model, and examined the association within each survey site and then pooled the results using meta-analysis. The results remained largely unchanged.

Competing interests: No competing interests

10 August 2015
Jun Lv
Associate Professor
Lu Qi, Harvard School of Public Health, Boston, MA, USA
Peking University Health Science Center
Beijing, China