Table 3 Performance on clinically-relevant utterances by patients.

PHQ	Keywords^a	Number of positives	True positives	False negatives	False positives	Sensitivity	Positive predictive value
1	Interest, interested, interesting, interests, pleasure	169	127	42	38	75%	77%
2	Depressed, depressing, feeling down, hopeless, miserable	74	63	11	12	85%	84%
3	Asleep, drowsy, sleepiness, sleeping, sleepy	114	85	29	19	75%	82%
4	Energy, tired	143	115	28	22	80%	84%
5	Overeat, overeating	5	3	2	0	60%	100%
6	Bad, badly, poorly	405	336	69	56	83%	86%
7	Mindfulness	11	9	2	0	82%	100%
8	Fidget, fidgety, restless, slow, slowing, slowly	39	28	11	13	72%	68%
9	Dead, death, depression, died, suicide	103	86	17	18	83%	83%
	Weighted average	1063	852	211	178	80%	83%

^aFor each question of the Patient Health Questionnaire (PHQ-9), relevant keywords were identified by querying the Unified Medical Language System using each PHQ question to generate search terms. Each table row denotes a different question from the PHQ-9. Number of occurrences refer to how often the keywords appear in our transcribed therapy sessions. True positives refer to a correct transcription by the automatic speech recognition system. False negatives and false positives denote incorrect transcriptions. Sample size is denoted by the number of positives.

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