Table 1.
Descriptive statistics and baseline differences between geriatric (age ≥ 65 years) and nongeriatric patients (age < 65 years). Continuous covariates are shown as mean ± SD and categorical covariates are shown as N (% of column total). Statistically significant P values are in bold.
| Covariates | Nongeriatric [N = 200] |
Geriatric [N = 41] |
P value |
|---|---|---|---|
| Age (years) | 48.53 ± 11.6 | 71.08 ± 5.4 | <.001a |
| TED duration (years) | 6.41 ± 7.0 | 5.83 ± 8.7 | .093a |
| Preoperative proptosis (mm) | 24.47 ± 3.2 | 23.45 ± 3.5 | .072b |
| Bilateral operation | 151 (75.5) | 23 (56.1) | .012 |
| Surgeon | .217c | ||
| A | 20 (10.0) | 7 (17.1) | |
| B | 51 (25.5) | 8 (19.5) | |
| C | 5 (2.5) | 3 (7.3) | |
| D | 94 (47.0) | 19 (46.3) | |
| E | 2 (1.0) | 1 (2.4) | |
| F | 28 (14.0) | 3 (7.3) | |
| Gender | .388 | ||
| Male | 41 (20.5) | 6 (14.6) | |
| Female | 159 (79.5) | 35 (85.4) | |
| Walls decompressed | .528c | ||
| Medial | 10 (5.0) | 1 (2.4) | |
| Lateral | 102 (51.0) | 25 (61.0) | |
| Balanced | 88 (44.0) | 15 (36.6) | |
| Ethnicity | .490c | ||
| Non-Hispanic Caucasian | 152 (80.4) | 36 (87.8) | |
| African-American | 27 (14.3) | 4 (9.8) | |
| Asian-American | 7 (3.7) | 0 (0.0) | |
| Other | 3 (1.6) | 1 (2.4) | |
| Smoking status | .002 | ||
| Current | 75 (39.5) | 5 (12.2) | |
| Quitter | 41 (21.6) | 16 (39.0) | |
| Never | 74 (38.9) | 20 (48.8) | |
| Thyroid disease | .725c | ||
| No thyroid disease | 8 (4.1) | 2 (4.9) | |
| Hyperthyroidism | 176 (90.7) | 38 (92.7) | |
| Hypothyroidism | 10 (5.2) | 1 (2.4) | |
| Dermopathy | 7 (4.3) | 4 (10.8) | .125c |
| Orbital radiation | 9 (4.6) | 1 (2.5) | 1.000c |
| Past decompression surgery | 18 (9.0) | 1 (2.5) | .213c |
| Past strabismus surgery | 16 (8.1) | 7 (17.1) | .085c |
| Radioactive iodine | 129 (67.2) | 26 (63.4) | .642 |
| Steroids | 7 (3.5) | 3 (7.3) | .381c |
| Thyroidectomy | 30 (15.5) | 5 (12.2) | .593 |
| Preoperative primary gaze diplopia | 52 (26.7) | 22 (53.7) | .001 |
| Active disease | 38 (19.1) | 11 (26.8) | .263 |
| Adjunct fat decompression | 146 (73.0) | 35 (85.4) | .095 |
a
Univariate comparisons made with the Mann-Whitney U test.
b
Univariate comparison made with the independent samples t test
c
Univariate comparisons made with the Fisher's exact test (all other categorical covariates analyzed with the chi-square test)