Table 5

Cause-specific mortality among 2663 Norwegian male submariners followed up during 1951–2021 (110 264) person-years

Cause of death	ICD-10	Obs	Exp	SMR	95% CI
All causes	A00–Y99	700	773.15	0.91	0.84 to 0.98
All diseases	A00–R99	615	678.01	0.91	0.84 to 0.98
Symptoms, signs, abnormal findings, ill-defined causes	R00–R99	18	22.82	0.79	0.47 to 1.25
Unknown due to lack of information	–	38	15.10	2.52	1.78 to 3.45
Neoplastic diseases	C00–D48	269	243.76	1.10	0.98 to 1.24
Lung, trachea	C33–C34	64	55.69	1.15	0.89 to 1.47
Melanoma of skin	C43	7	8.50	0.82	0.33 to 1.70
Urinary bladder	C67	16	7.80	2.05	1.17 to 3.33
Non-neoplastic diseases	A00–B99, D50–Q99	328	411.43	0.80	0.72 to 0.89
Infectious and parasitic diseases	A00–B99	6	11.67	0.51	0.19 to 1.12
Endocrine, nutritional and metabolic diseases	E00–E89	9	17.18	0.52	0.24 to 0.99
Diabetes mellitus	E10–E14	9	12.79	0.70	0.32 to 1.34
Mental and behavioural disorders	F00–F99	22	27.17	0.81	0.51 to 1.23
Alcoholic psychosis/chronic alcohol abuse	F10	7	9.06	0.77	0.31 to 1.59
Diseases of the nervous system and the sense organs	G00–H95	20	28.19	0.71	0.43 to 1.09
Diseases of the circulatory system	I00–I99	204	227.87	0.90	0.78 to 1.03
Ischaemic heart diseases	I20–I25	107	123.81	0.86	0.71 to 1.04
Cerebrovascular diseases	I60–I69	29	41.05	0.71	0.47 to 1.01
Diseases of the respiratory system	J00–J99	42	57.11	0.74	0.53 to 0.99
Pneumonia	J12–J18	6	14.67	0.41	0.15 to 0.89
Chronic lower respiratory diseases	J40–J47	29	34.35	0.84	0.57 to 1.21
Diseases of the digestive system	K00–K92	16	24.05	0.67	0.38 to 1.08
Chronic liver disease	K70, K73–K74	4	8.67	0.46	0.13 to 1.18
External causes of injury and poisoning	V01–Y89	47	80.04	0.59	0.43 to 0.78
Suicide	X60–X84, Y87.0	15	23.96	0.63	0.35 to 1.03
Accidents	V01–X59	31	53.96	0.57	0.39 to 0.82
Transport accidents	V01–V99, Y85	18	19.77	0.91	0.54 to 1.44
Accidental falls	W00–W19	3	10.51	0.29	0.06 to 0.83
Accidental poisoning	X40–X49	2	7.68	0.26	0.03 to 0.94
Accidental drowning and submersion	W65–W74	3	4.15	0.72	0.15 to 2.11

Obs and exp number of deaths, SMR adjusted for age and period with 95% CI.
Exp, expected; ICD-10, International Classification of Diseases, 10th revision; Obs, observed; SMR, standardised mortality ratio.