I think, though, that you missed one enormously important factor which is invisible to patients.

不过，我觉得你漏掉了一条患者看不到的因素，而这个因素非常非常重要。

youdao

Business management is an important factor which holds up the existence and development of enterprises.

企业管理，是影响企业生存与发展的极为重要的因素。

youdao

Temperature is an important factor which can influence the metabolize, quality and the life of preservation of fruit.

温度是影响果实代谢过程、品质与贮藏寿命的重要因子。

youdao

Unfortunately, the most important factor in treating acne is not which treatment you use, but how faithfully you are using it.

CNN: How can I get rid of my acne?

This provides the vine with plenty of drainage, which is an important factor in a wet, northern climate influenced by the Atlantic Ocean.

WSJ: Reflections on Champagne

The processing power of the device matters to a small extent (an iPad 2 will deliver somewhat better performance than a slightly slower first generation iPad) but the most important factor is the speed of the network which is why the company recommends WiFi or a 4G mobile connection.

FORBES: Connect