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. Author manuscript; available in PMC: 2011 Aug 22.
Published in final edited form as: US Army Med Dep J. 2011 Jul-Sep:86–95.

Table 4.

Reported medical history among study group and odds ratios (95% CI) for zones 1 vs 3 and zones 2 vs 3.

Somatic Disorders All Zones N=742 Zone 1 n1=168 Zone 2 n2=253 Zone 3 n3=321 P* Zones 1 vs 3 Zones 2 vs 3
CD: Count by Disorder
Odds Ratio (95 % CI)
CD (%N) CD (%n1) CD (%n2) CD (%n3)
Hypertension 77 (11.3) 18 (14.9) 19(8.0) 40 (12.5) .102 1.22 (0.67–2.23)a 1.65 (0.93–2.92)a
Cardiac disorder 90(13.1) 20 (16.5) 16(6.6) 54 (16.8) .001 0.98 (0.56–1.72)a 2.87 (1.60–5.15)b
Headaches 215 (30.0) 81 (54.7) 46 (18.6) 88 (27.4) .001 3.2 (2.13–4.80)c 1.65 (1.10–2.47)d
Respiratory disorder 106 (15.1) 42 (31.3) 25 (10.1) 39 (12.2) .001 3.30 (2.02–5.42)c 1.23 (0.72–2.09)a
Asthma 31 (4.6) 11 (9.8) 4(1.7) 16 (5.0) .003 2.08 (0.93–4.62)a 3.12 (1.03–9.46)d
Ear/nose/throat disorder 91 (13.3) 23 (19.5) 19 (7.8) 49 (15.3) .003 1.34 (0.78–2.32)a 2.13 (1.22–3.73)e
Ulcer 42 (6.2) 13 (11.4) 11 (4.5) 18 (5.6) .036 2.17 (1.03–4.58)d 1.26 (0.58–2.70)a
Gastrointestinal disorder 253 (36.0) 58 (43.0) 70 (28.3) 125 (38.9) .006 1.18 (0.79–1.78)a 1.61 (1.13–2.30)e
Diabetes 24 (3.6) 7 (6.3) 5 (2.2) 12 (3.7) .167 1.72 (0.66–4.47)e 1.74 (0.60–5.01)a
Genitourinary disorder 131 (18.5) 50(35.5) 35(14.1) 46(14.3) .001 3.28 (2.06–5.23)c 1.02 (0.63–1.64)a
Hematology disorder 9 (1.3) 4 (3.6) 1(0.4) 4 (1.3) .051 2.96 (0.73–12.05)a 3.07(0.34–27.61)a
Rheumatology disorder 87 (12.8) 27 (23.7) 12(4.9) 48 (15.0) .001 1.77 (1.04–3.00)d 3.38 (1.76–6.53)b
Musculoskeletal disorder 195 (27.3) 78 (53.4) 55 (22.2) 62 (19.3) .001 4.79 (3.13–7.35)c 0.84 (0.56–1.26)a
Chronic fatigue 56(8.1) 38 (30.2) 18 (7.4) 0 (0.0) .001 277 (16.6–4558.60)c 0.02 (0.001–0.32)c
Allergies 253 (36.6) 61 (47.3) 68 (28.2) 124 (38.6) .001 1.42 (0.94–2.15)e 1.60 (1.12–2.29)e
Skin disorders v 181 (26.6) 44 (37.6) 40 (16.5) 97 (30.2) .001 1.39 (0.89–2.17)a 2.19 (1.45–3.31)b
Miscellaneous disorders 66 (5.9) 23 (17.0) 17 (4.4) 26 (4.4) .001 5.29 (2.55–10.98)c 0.84 (0.36–1.93)a

Percentages are based on non-missing data.

*

Represents the P value for overall χ2 test.

OR represents the magnitude of association between medical condition and zone 1 where zone 3 Is the reference zone.

OR represents the magnitude of association between medical condition and zone 2 where zone 3 Is the reference zone.

Note: Zone 1 = In Kuwait; Zone2=100–190 km from Kuwait; Zone 3=360 km from Kuwait.

a

No significant difference

b

P<.001

c

P<0001

d

P<.05

e

P<.01