Table 1.
Features used for identifying symptom severity levels.
| Name | Definition | Type |
|---|---|---|
| Question & Answer Features | ||
| Severe questions | ||
| F1 | Has the patient had inpatient treatment? | ℬ |
| F2 | Does the patient have a history of suicidal behavior? | ℬ |
| F3 | Does the patient have a history of violent behavior? | ℬ |
| F4 | Does the patient have a history of self-injurious behavior? | ℬ |
| Risk assessment questions | ||
| F5 | Has the patient experienced loss of housing? | ℬ |
| F6 | Has the patient had thoughts of harm to self? | ℬ |
| F7 | Is the patient prone to worrying excessively? | ℬ |
| Drug & substance questions | ||
| F8 | Does the patient have a history of drug use? | ℬ |
| F9 | Does the patient have a history of marijuana use? | ℬ |
| F10 | Does the patient have a history of cocaine use? | ℬ |
| F11 | Does the patient have a history of sedative/hypnotic use? | ℬ |
| F12 | Does the patient have a history of opiate use? | ℬ |
| F13 | Does the patient have a history of hallucinogens use? | ℬ |
| Psychological symptom questions | ||
| F14 | Does the patient have symptoms of depression (MDD)? | ℬ |
| F15 | Does the patient have symptoms of bipolar disorder (BP)? | ℬ |
| F16 | Does the patient have symptoms of general anxiety disorder (GAD)? | ℬ |
| F17 | Does the patient have symptoms of obsessive compulsive spectrum disorders? | ℬ |
| F18 | Does the patient have symptoms of attention deficit hyperactive disorder (ADHD)? | ℬ |
| F19 | Does the patient have symptoms of eating disorders? | ℬ |
| F20 | Does the patient have symptoms of complicated grief? | ℬ |
| F21 | Does the patient have symptoms of post-traumatic stress disorder (PTSD)? | ℬ |
| F22 | Does the patient have symptoms of dementia? | ℬ |
| Question coverage features | ||
| F23 | Were any severe questions answered yes? | ℬ |
| F24 | Number of severe questions answered yes | 𝒩 |
| F25 | Were any risk assessment questions answered yes? | ℬ |
| F26 | Number of risk assessment questions answered yes | 𝒩 |
| F27 | Were any drug & substance questions answered yes? | ℬ |
| F28 | Number of drug & substance questions answered yes | 𝒩 |
| F29 | Were any psychological symptom questions answered yes? | ℬ |
| F30 | Number of psychological symptom questions answered yes | 𝒩 |
| F31 | Were any questions answered yes? | ℬ |
| F32 | Number of questions answered yes | 𝒩 |
| Lexical & Pattern Features | ||
| F33 | Were any patterns in the ALCOHOL lexicon found? | ℬ |
| F34 | Number of patterns in the ALCOHOL lexicon that were found | 𝒩 |
| F35 | Were any patterns in the DRUG lexicon found? | ℬ |
| F36 | Number of patterns in the DRUG lexicon that were found | 𝒩 |
| F37 | Were any patterns in the EATING_DISORDER lexicon found? | ℬ |
| F38 | Number of patterns in the EATING_DISORDER lexicon that were found | 𝒩 |
| F39 | Were any patterns in the HISTORY lexicon found? | ℬ |
| F40 | Number of patterns in the HISTORY lexicon that were found | 𝒩 |
| F41 | Were any patterns in the INPATIENT lexicon found? | ℬ |
| F42 | Number of patterns in the INPATIENT lexicon that were found | 𝒩 |
| F43 | Were any patterns in the LEGAL lexicon found? | ℬ |
| F44 | Number of patterns in the LEGAL lexicon that were found | 𝒩 |
| F45 | Were any patterns in the OUTPATIENT lexicon found? | ℬ |
| F46 | Number of patterns in the OUTPATIENT lexicon that were found | 𝒩 |
| UMLS Hierarchy Features | ||
| F47 | Were any medical concepts descendants of Mental Health in UMLS? | ℬ |
| F48 | All paths from each descendant of Mental Health and Mental Health itself in UMLS | ℳ |
| F49 | Were any medical concepts descendants of Mental Disorder in UMLS? | ℬ |
| F50 | All paths from each descendant of Mental Disorder and Mental Disorder itself in UMLS | ℳ |
| F51 | Were any medical concepts descendants of Behavior Disorder in UMLS? | ℬ |
| F52 | All paths from each descendant of Behavior Disorder and Behavior Disorder itself in UMLS | ℳ |
| Patient Age Features | ||
| F53 | Was the patient at least 80 years old? | ℬ |
| F54 | Was the patient at least 70 years old? | ℬ |
| F55 | Was the patient at least 60 years old? | ℬ |
| F56 | Was the patient younger than 40 years old? | ℬ |
| F57 | The age of the patient | 𝒩 |
| Axis V GAF Features | ||
| F58 | The patient’s lowest AXIS V GAF category | 𝒩 |
| F59 | The patient’s current AXIS V GAF category | 𝒩 |
| ICD-9 Code Features | ||
| F60 | All ICD-9 codes (truncated as an integer) | ℳ |
| F61 | All ICD-9 codes (truncated to the tenths decimal place) | ℳ |
| F62 | All ICD-9 codes (truncated to the hundredths decimal place) | ℳ |
| F63 | All ICD-9 codes (truncated to as the ICD-9 code class) | ℳ |