Table 1. Basic characteristics according to the self-reported treatment history for H. pylori among ever-infected subjects in the JPHC-NEXT Study.
| Overall | Untreateda | Years from treatmenta | |||
|
| |||||
| <1Y | 1–5Y | 6Y+ | |||
| Total, n (%) | 28,696 (100.0) | 22,420 (78.1) | 1,100 (3.8) | 2,889 (10.1) | 2,287 (8.0) |
| Age, years, mean (SD) | 61.7 (8.4) | 61.7 (8.5) | 61.7 (8.3) | 61.6 (8.1) | 61.5 (7.8) |
| Sex | |||||
| Male, n (%) | 12,857 (100.0) | 9,583 (74.5) | 484 (3.8) | 1,429 (11.1) | 1,361 (10.6) |
| Female, n (%) | 15,839 (100.0) | 12,837 (81.0) | 616 (3.9) | 1,460 (9.2) | 926 (5.8) |
| Serum pepsinogen | |||||
| PG I, IQR, ng/mL | 60.2 (36.5–74.6) | 61.4 (36.8–77.4) | 43.0 (31.2–58.8) | 45.7 (34.4–60.7) | 52.3 (41.0–69.7) |
| PG II, IQR, ng/mL | 19.4 (9.9–25.4) | 21.7 (12.7–27.8) | 8.2 (6.4–11.3) | 8.5 (6.7–11.5) | 9.8 (7.6–13.0) |
| PG I/II ratio, mean (SD) | 3.6 (2.0) | 3.1 (1.7) | 5.1 (1.9) | 5.4 (1.8) | 5.5 (1.7) |
| Serum AGb, n (%)c | 10,001 (34.9) | 9,565 (42.7) | 133 (12.1) | 181 (6.3) | 122 (5.3) |
AG, atrophic gastritis; IQR, interquartile range; n, number; PG, pepsinogen; SD, standard deviation.
aSubjects were classified according to their self-reported treatment history for H. pylori as follows: none: untreated; treated less than 1 year: <1Y; treated 1 to 5 years ago: 1–5Y; and treated 6 or more years ago: 6Y+.
bDefined as a combination of the serum PG I level ≤70 ng/mL and PG I/II ratio ≤3.0.
cPercentage of atrophic gastritis by pepsinogen.