Table 1.
Characteristics of patients with available versus unavailable PSQI data
| Available PSQI data (n = 560) |
Unavailable PSQI data (n = 179) |
p value | |
|---|---|---|---|
| Age (mean, SD) | 63 (9) | 63 (11) | 0.33 |
| Women | 142 (25%) | 48 (27%) | 0.70 |
| Education levela,b | |||
| Low | 215 (42%) | 64 (49%) | 0.19 |
| Middle | 136 (26%) | 35 (27%) | |
| High | 166 (32%) | 32 (24%) | |
| Living alonea | 108 (21%) | 56 (43%) | < 0.001 |
| HNC location | |||
| Oral cavity | 157 (28%) | 42 (24%) | 0.34 |
| Oropharynxc | 198 (35%) | 64 (36%) | |
| Hypopharynx | 35 (6%) | 17 (10%) | |
| Larynx | 152 (27%) | 53 (30%) | |
| Unknown primary | 18 (3%) | 3 (2%) | |
| HNC stage | |||
| I | 134 (24%) | 29 (16%) | 0.086 |
| II | 103 (18%) | 29 (16%) | |
| III | 90 (16%) | 37 (21%) | |
| IV | 233 (42%) | 84 (47%) | |
| ECOG performance status | |||
| 0 | 398 (71%) | 109 (61%) | 0.012 |
| 1 or more | 162 (29%) | 70 (39%) | |
| Comorbiditya | |||
| None | 172 (32%) | 32 (19%) | 0.002 |
| Mild | 203 (38%) | 61 (37%) | |
| Moderate | 109 (20%) | 46 (28%) | |
| Severe | 50 (9%) | 26 (16%) |
aThere were 91 missing values on education level, 90 missing values on living arrangement, and 40 missing values on comorbidity
bLow education level includes primary education, lower or preparatory vocational education, and intermediary general secondary education. Middle education level includes senior general secondary education and higher general secondary education. High education level includes higher professional education and university
cHuman papilloma virus (HPV) status of oropharynx cancer patients with available PSQI data was positive among 104 patients, negative among 67 patients, and not tested among 27 patients. For patients with unavailable PSQI data, the HPV status was positive among 26 patients, negative among 32 patients, and not tested among 6 patients