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. 2015 Apr 23;99(8):1103–1108. doi: 10.1136/bjophthalmol-2014-305986

Table 1.

Sociodemographic characteristics, military service and health characteristics of younger ex-servicemen with a combat-related visual impairment and younger ex-servicemen with a non-combat-related visual impairment

Combat-related visual impairment (n=20)
n (%)
Non-combat-related visual impairment (n=54)
n (%)
Statistical test, p value
Age (years) ∼ Median: 33.5
IQR: 25.5–47.5
Median: 47.5
IQR: 41–51
p<0.01 (Wilcoxon–Mann–Whitney)
Marital status
 In a relationship 11 (55.0) 33 (61.1)
 Not in a relationship 9 (45.0) 21 (38.9) p=0.63 (χ2)
χ²(1) 0.23
Children
 Yes 11 (55.0) 42 (77.8)
 No 9 (45.0) 12 (22.2) p=0.05 (χ2)
χ²(1) 3.73
Educational qualifications*
 None 1 (5.0) 6 (11.5)
 O levels or similar 8 (40.0) 20 (38.5)
 A levels, similar or higher 11 (55.0) 26 (50.0) p=0.86 (Fisher's exact)
Employed at the time of interview†
 Yes 11 (55.0) 15 (27.8)
 No 9 (45.0) 39 (72.2) p=0.03 (χ2)
χ²(1) 4.75
Housing
 Owned 14 (70.0) 20 (37.0)
 Rented 5 (25.0) 30 (55.6)
 Other 1 (5.0) 4 (7.4) p=0.04 (Fisher's exact)
Time in military (years)
 0–4 5 (25.0) 13 (24.1)
 5–12 11 (55.0) 28 (51.9)
 >12 4 (20.0) 13 (24.1) p=1.00 (Fisher's exact)
Time since becoming visual impaired (years)
Median: 6.3
IQR: 3.1–20.0
Median: 12.1
IQR: 6.7–19.6
p=0.35 (Wilcoxon–Mann–Whitney)
 0–4 years 7 (35.0) 7 (13.0)
 5–9 years 4 (20.0) 17 (31.5)
 10–14 years 2 (10.0) 9 (16.7)
 15 ore more 7 (35.0) 21 (38.9) p=0.21 (Fisher's exact)
Other long-term illness, health problems, but not as result of the event that caused the visual impairment
 Yes 4 (20.0) 34 (63.0)
 No 16 (80.0) 20 (37.0) p<0.01 (Fisher's exact)
Amputation
 Yes 5 (25.0) 0 (0.0)
 No 15 (75.0) 54 (100.0) p<0.01 (Fisher's exact)
Currently on medication
 Yes 8 (40.0) 35 (64.8)
 No 12 (60.0) 19 (35.2) p=0.06 (χ2)
χ²(1) 3.70
Self-rated health
 Excellent/very good/good 18 (90.0) 36 (66.7)
 Fair/poor 2 (10.0) 18 (33.3) p=0.08 (Fisher's exact)

Calculated from 1 November 2012 (participants needed to be under the age of 55 years as of that date to be eligible for the current study).

*Two missing data.

†Several participants in the combat-related visual impairment group were still enlisted with the armed forces, but were likely to be medically discharged in due course (n=4).