Table 2 Spearman partial correlation coefficients between depressive symptom score, coffee drinking, and non-nutritive sweetener use among study particiapnts^*.

Total coffee

0.07^b

—

Regular coffee

0.07^b

0.91^b

—

Decaffeinated coffee

0.02^a

0.25^b

−0.11^b

—

Any NNS use

0.10^b

0.11^b

0.09^b

0.06^b

—

NNS use in coffee or tea

0.07^b

0.11^b

0.09^b

0.05^b

0.55^b

—

Diet drinks

0.08^b

0.06^b

0.04^b

0.04^b

0.87^b

0.16^b