Research Article
Shared Medical and Environmental Risk Factors in Dry Eye Syndrome, Sjogren’s Syndrome, and B-Cell Non-Hodgkin Lymphoma: A Case-Control Study
Table 1
Demographic characteristics of study population.
| | Characteristic | Control
()
(%) | DES
()
(%) | SS
()
(%) | B-NHL
()
(%) |
() |
| | Female gender | 168 (79.6) | 81 (67.5) | 84 (92.3) | 143 (51.1) | <0.001 | | Mean age (SD) | 54.5 (14.2) | 52.05 (15.1) | 56.8 (12.8) | 58.7 (16.2) | 0.29 | | Ethnicity: | | | | | 0.04 | | Eastern European | 130 (61.6) | 67 (55.8) | 36 (39.6) | 160 (57.1) | | | West Asian | 35 (16.6) | 20 (16.7) | 22 (24.2) | 47 (16.8) | | | North African | 32 (15.2) | 14 (11.7) | 22 (24.2) | 47 (16.8) | | | Mixed | 14 (6.7) | 19 (15.8) | 11 (12.1) | 26 (19.2) | | | Marital status: | | | | | 0.01 | | Single | 6 (2.8) | 13 (10.8) | 4 (4.4) | 19 (6.8) | | | First marriage | 182 (68.3) | 89 (74.2) | 69 (75.8) | 181 (64.6) | | | Second marriage or more | 10 (4.7) | 4 (3.3) | 4 (4.4) | 17 (6.1) | | | Divorced or separated | 6 (2.8) | 9 (7.5) | 9 (9.9) | 32 (11.4) | | | Widowed | 2 (0.9) | 5 (4.2) | 5 (5.5) | 29 (10.4) | | | Education > 12 yrs. | 153 (72.5) | 91 (75.8) | 52 (57.1) | 181 (64.7) | 0.01 | | Number of births ≥ 5 | 33 (15.6) | 12 (10.0) | 22 (24.2) | 58 (20.7) | 0.02 | | Number of siblings ≥ 5 | 48 (22.7) | 32 (26.7) | 37 (40.7) | 78 (27.9) | 0.01 |
|
|
DES = dry eye syndrome; SS = Sjogren’s syndrome; B-NHL = B-cell non-Hodgkin lymphoma; = chi-square test; SD = standard deviations. |
