Table 1.
Characteristics of non-responders.
| Characteristics | Complete | Partially complete | Incomplete |
|---|---|---|---|
| (n = 106,917) | (n = 10,928) | (n = 176,190) | |
| Sex | |||
| Female | 66,161 (61.9%) | 7004 (64.1%) | 91,057 (51.7%) |
| Male | 40,755 (38.1%) | 3924 (35.9%) | 85,131 (48.3%) |
| Age (10-year categories) | |||
| 15–19 years | 4071 (3.8 %) | 1261 (11.5%) | 22,922 (13.0%) |
| 20–29 years | 13,000 (12.2%) | 2073 (19.0%) | 46,545 (26.4%) |
| 30–39 years | 12,647 (11.8%) | 1781 (16.3%) | 33,914 (19.2%) |
| 40–49 years | 18,969 (17.7%) | 1861 (17.0%) | 31,569 (17.9%) |
| 50–59 years | 27,014 (25.3%) | 1917 (17.5%) | 23,935 (13.6%) |
| 60–69 years | 19,551 (18.3%) | 1134 (10.4%) | 10,364 (5.9%) |
| 70+ years | 11,664 (10.9%) | 901 (8.2%) | 6939 (3.9%) |
| Charlson Comorbidity Scores | |||
| 0 | 92,179 (86.2%) | 9431 (86.3%) | 159,920 (90.8%) |
| 1 | 7243 (6.8%) | 760 (7.0%) | 9163 (5.2%) |
| 2 | 5293 (5.0%) | 460 (4.2%) | 4750 (2.7%) |
| 3 or more | 2201 (2.1%) | 277 (2.5%) | 2355 (1.3%) |
Characteristics of n = 294,035 individuals who were sent a questionnaire 9 months after their test date and either completed, partially completed, or didn’t complete the questionnaire. Information was missing for six individuals.