Table 1 Self-reported health conditions by serological status for hepatitis and sexually transmissible infections
Condition test results | X 2, p (Φ/ ΦC) | Sensitivity | Specificity | κ, p | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Self-report | Blood sugar levels | |||||||||
Diabetes | Total | Likely (>11 mmol/L) | Possible (≥5.5 mmol/L to 11 mmol/L) | Unlikely (<5.5 mmol/L) | ||||||
Yes | 36 (1.7%) | 7 | 16 | 13 | X2=45.723, p<.001 (0.191) | 63.9% | 98.3% | κ = 0.022, p=.047 | ||
No | 1,222 (57.8%) | 25 | 452 | 745 | ||||||
Missing | 856 (40.5%) | |||||||||
Hepatitis B | Positive HBcAb | Negative HBcAb | ||||||||
Yes | 121 (5.7%) | 100 | 21 | X 2=186.136, p<.001 (0.401) | 82.6% | 97.4% | κ = 0.332, p<.001 | |||
No | 1,038 (49.1%) | 239 | 799 | |||||||
Missing | 955 (45.2%) | |||||||||
Hepatitis C | Positive HCAb | Negative HCAb | ||||||||
Yes | 415 (19.6%) | 398 | 17 | X 2=787.788, p<.001 (0.782) | 95.9% | 97.8% | κ = 0.770, p<.001 | |||
No | 874 (41.3%) | 121 | 753 | |||||||
Missing | 825 (39.0%) | |||||||||
Chlamydia | Positive | Negative | ||||||||
Yes | 46 (2.2%) | 0 | 46 | X 2=1.060, p=.303 (0.030) | 0% | 95.9% | κ= -0.029, p=.303 | |||
No | 1,109 (52.4%) | 25 | 1,084 | |||||||
Missing | 959 (45.4%) | |||||||||
Herpes (genital) | Positive | Negative | ||||||||
Yes | 25 (1.2%) | 13 | 12 | X 2=29.069, p<.001 (0.182) | 52.0% | 98.4% | κ = 0.126, p<.001 | |||
No | 845 (40.0%) | 114 | 731 | |||||||
Missing | 1,241 (58.7%) | |||||||||
Syphilis | Reactive RPR | Non-reactive RPR | ||||||||
Yes | 44 (2.1%) | 4 | 40 | X 2=14.818, p<.001 (0.162) | 9.1% | 92.8% | κ = 0.123, p<.001 | |||
No | 524 (24.8%) | 6 | 518 | |||||||
Missing | 1,546 (73.1%) | |||||||||
Reactive TPPA | Non-reactive TPPA | |||||||||
Yes | 42 (2.0%) | 12 | 30 | X 2=42.733, p<.001 (0.306) | 28.6% | 93.0% | κ = 0.297, p<.001 | |||
No | 415 (19.6%) | 15 | 400 | |||||||
Missing | 1,657 (78.4%) | |||||||||