Calculated Non-supine AHI

According to the first hypothesis, the calculated baseline non-supine AHI is equal to the actual AHI with positional therapy. However, in literature this theory has proven to be incorrect [1, 2].

Averaging

The second hypothesis is based on the theory that the remaining percentage of total sleep time in the other sleeping positions per position can be proportionally divided. Two different examples are given in Fig. 1.

If a patient is treated with positional therapy, it can be expected that the % TST in supine is reduced to 0. Following this theory, the remaining percentages of sleeping positions with positional therapy can be proportionally divided according to the baseline distribution. However, this relies on the assumption that these percentages remain similar compared to the baseline study.

Fixed Correction