Table 1: Prevalence of self-reported chronic health conditions among 2273 male inmates newly admitted to federal penitentiaries, overall and by age group and Aboriginal status
Health conditionTotal, no. (%)*
n = 2273
Age group, no. (%)*Aboriginal ancestry, no. (%)*
< 50 yr
n = 1970
≥ 50 yr
n = 302
φc valueAboriginal
n = 496
Non-Aboriginal
n = 1774
φc value
Central nervous system
Head injury738(34.1)648(34.6)90(30.7)0.03193(43.0)543(31.7)0.10†
Seizures92(4.3)75(4.0)17(5.8)0.0323(5.1)68(4.0)0.02
Spinal injury56(2.6)47(2.5)9(3.1)0.0113(2.9)43(2.5)0.01
Musculoskeletal system
Back pain411(19.3)332(18.0)79(27.5)0.0873(16.4)338(20.0)0.04
Arthritis177(8.3)122(6.6)55(19.2)0.16†36(8.1)140(8.3)0.003
Osteoporosis9(0.4)6(0.3)3(1.1)0.042(0.5)7(0.4)0.002
Respiratory system
Asthma318(14.7)284(15.1)34(11.6)0.0357(12.7)261(15.2)0.03
Bronchitis63(2.9)55(2.9)8(2.7)0.00414(3.1)49(2.9)0.01
Other pulmonary disease38(1.8)23(1.2)15(5.1)0.10†3(0.7)35(2.0)0.04
Cardiovascular system
Hypertension184(8.5)114(6.1)70(23.8)0.22†35(7.8)149(8.7)0.01
Elevated cholesterol114(5.3)64(3.4)50(17.1)0.21†11(2.4)103(6.0)0.06
Heart attack44(2.0)24(1.3)20(6.8)0.13†9(2.0)35(2.0)0.001
Arrhythmia34(1.6)26(1.4)8(2.7)0.046(1.3)28(1.6)0.01
Angina30(1.4)12(0.6)18(6.1)0.16†5(1.1)25(1.5)0.01
Stroke16(0.7)8(0.4)8(2.7)0.092(0.4)14(0.8)0.02
Blood-borne virus
HIV/AIDS27(1.3)23(1.3)4(1.5)0.00510(2.4)17(1.1)0.05
HCV191(9.4)156(8.8)35(12.7)0.0566(15.5)124(7.7)0.11†
Endocrine system
Diabetes88(4.2)54(2.9)34(11.9)0.15†16(3.6)72(4.3)0.01
Gastrointestinal system
Ulcers69(3.2)56(3.0)13(4.4)0.0312(2.7)57(3.3)0.02
Reproductive system
Prostate problems60(2.8)26(1.4)34(11.8)0.21†11(2.5)49(2.9)0.01
Any cancer history39(1.8)19(1.0)20(6.8)0.15†4(0.9)35(2.0)0.04

Note: HCV = hepatitis C virus.
*The denominator varies by condition owing to missing data.
†Value indicates a meaningful effect size (i.e., at least a weak association). Cramér’s phi (denoted as φc) values between 0.10 and 0.20 indicate a weak association, between 0.20 and 0.40 a moderate association, between 0.40 and 0.60 a strong association and above 0.60 a very strong association.