system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is true about secular trend-
assistant
The correct answer is  The term secular trend implies changes in the occurrence of disease (i.e. Progressive increase or decrease)over a long period generally several years or decades (refer page no:66 park 23 rd edition.