目標：台灣地區的剖腹產率約為３４％，在國際上名列前矛。以往有關產姨問卷調查的當果顯示，產婦及其家屬對是否施行剖腹產有影響力，而選擇良辰吉時是產婦決定採用剖腹產的最主要非醫療因素。本研究擬檢驗在控制了醫療因素後，良辰吉時與剖腹產的施行間是否有顯著正向關係。方法：本研究以民國８７年的出生證明資料為基礎，在控制了醫療因素後，觀察良辰吉時與剖腹生產間的關係，分析對象並且區分為選擇性剖腹產與非選擇性剖腹產二類，俾進一步觀察良辰吉時在兩者間的影響是否有差異。結果：在選擇性剖腹產中，良辰吉時和剖腹產施行機率間有顯著的正向關係，同時吉時的效果大於吉日的效果；而在非選擇性剖腹產中，良辰吉時的影響力則未達統計顯著性。結論：由於選擇性剖腹產的案件數遠超過非選擇性剖腹產的案件數，文化因素因而對台灣地區剖腹產的施行機率與時間有相當的影響力。

Objectives: The cesarean-section rate in Taiwan is around 34%, which is relatively high in world standards. The survey results indicate that pregnant women and their family members had influential impact on the choice of cesarean section, and choosing an astrologically auspicious time for delivery was the most important underlying non-clinical factor. Methods: In this study, we used birth certificates to test the re1ationship between auspicious time and cesarean section decision. Observations were further classified into elective and non-elective surgeries. Results: After controlling for all the confounding factors, the regression results indicate that the auspicious time and the probability of cesarean section are highly-positively correlated, and the auspicious hours have stronger impact than the auspicious days in the elective surgeries. However, none of the cultural factors were significantly different from zero in the non-elective cases. Conclusions: ‘ Chinese cultural tradition does have strong effect on the timing of the cesarean sections in Taiwan.

良辰；吉時；剖腹產；文化

Auspicious Days; Auspicious Hours; Cesarean Section; Culture