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. 2019 Mar 26;14:100345. doi: 10.1016/j.conctc.2019.100345

Table 1.

List of variables available for study.

All IBD Visits [CD - ICD9-CM: 555.0, 555.1 and 555.9 (including all subgroup codes) or UC [ICD9-CM: 556 (including all subgroup codes)] medical encounters
 Date of medical encounter
 All ICD-9 codes affiliated with medical encounter
 Visit type (e.g., inpatient or outpatient)
All IBS (ICD9-CM: 564.1), or IGE (ICD9-CM: 001 [all subgroups], 003.0, 003.9, 004 [all subgroups], 008.0, 008.43, 008.44, 008.8, 005.4, 008.47, 008.49, 008.5, 009.0–3, 005.8, 005.9, 006.0, 006.1, 006.2, 006.9, 007 [all subgroups], 008.6 [all subgroups]) medical encounters prior and subsequent to initial IBD diagnosis
 Date of medical encounter
 All ICD-9 codes affiliated with medical encounter
 Visit type (e.g., inpatient or outpatient)
All medical encounters in which a procedural code for colonoscopy was utilized
 Date of medical encounter
 All ICD-9 and CPT codes affiliated with medical encounter
 Visit type (e.g., inpatient or outpatient)
All operational deployments
 Date of deployment
 Duration of deployment
 Operation
Demographic Variables
 Year of birth
 Gender
 Race
 Education level
 Military Rank
 Marital status
 Branch of service