Table 2.

Physical comorbidity rates of borderline personality disorder (BPD) cases and non-BPD controls with diseases categorized in ICD-9-CM coding system

		BPD				BPD (total)c (%)	Non-BPD (total)d (%)	OR	95% CI
Category of comorbid disease	ICD 9 CM codes	Female (%)	Male (%)	ORa	95% CIb
Respiratory system	460–519	96.8	88.2	4.09	1.49–11.2e	93.8	88.2	2.04	1.23–3.39e
Nervous system and sense organs	320–389	72.6	64.7	1.45	0.86–2.43	69.9	52.9	2.15	1.63–2.83e
Digestive system	520–579	95.8	87.3	3.32	1.33–8.31e	92.8	81.9	2.85	1.78–4.55e
Skin and subcutaneous tissue	680–709	72.6	65.7	1.39	0.83–2.33	70.2	56.0	1.85	1.41–2.44e
Injury and poisoning	800–999	84.7	84.3	1.03	0.53–2.01	84.6	53.2	4.84	3.45–6.78e
Infectious and parasitic	001–139	52.1	42.2	1.49	0.92–2.43	48.6	35.6	1.71	1.32–2.22e
Genitourinary system	580–629	81.1	22.5	14.7	8.15–26.5e	60.6	46.3	1.78	1.37–2.31e
Musculoskeletal system	710–739	65.3	61.8	1.16	0.71–1.92	64.0	42.1	2.45	1.88–3.19e
Congenital anomalies	740–759	3.68	2.94	1.26	0.32–4.99	3.42	1.63	2.14	0.99–4.66
Endocrine, metabolic and immunity	240–279	31.6	14.7	2.68	1.43–5.01e	25.7	14.3	2.07	1.52–2.82e
Neoplasm	140–239	27.4	12.7	2.58	1.33–5.01e	22.3	11.5	2.21	1.59–3.07e
Circulatory system	390–459	29.5	23.5	1.36	0.78–2.36	27.4	11.1	3.01	2.20–4.13e
Blood and blood-forming organs	280–289	17.4	4.90	4.08	1.54–10.8e	13.0	4.79	2.97	1.93–4.59e

^a OR odds ratio, ^b CI confidence interval, ^c Total BPD cases, ^d Total non-BPD controls, ^e Statistical significance