Table 3.
Distribution of workers with functional dyspepsia by characteristics (n = 901)
| Male (n = 561) | Female (n = 340) | |||||
|---|---|---|---|---|---|---|
| FD(−) N | FD(+) N | p-value | FD(−) N | FD(+) N | p-value | |
| Age (years) | ||||||
| < 20 | 22 (91.7%) | 2 (8.3%) | 0.456 | 48 (90.6%) | 5 (9.4%) | 0.967 |
| 21–25 | 5 (100%) | 0 (0%) | 106 (92.2%) | 9 (7.8%) | ||
| 26–30 | 48 (90.6%) | 5 (9.4%) | 108 (90.8%) | 11 (9.2%) | ||
| 31–35 | 302 (95.3%) | 15 (4.7%) | 42 (93.3%) | 3 (6.7%) | ||
| 36–40 | 156 (96.3%) | 6 (3.7%) | 7 (87.5%) | 1 (12.5%) | ||
| Body mass index | ||||||
| < 25 kg/m2 | 297 (96.1%) | 12 (3.9%) | 0.182 | 252 (91.3%) | 24 (8.7%) | 0.820 |
| ≥ 25 kg/m2 | 236 (93.7%) | 16 (6.3%) | 59 (92.2%) | 5 (7.8%) | ||
| Regular exercise (times / week) | ||||||
| 0 | 194 (95.1%) | 10 (4.9%) | 0.997 | 203 (92.3%) | 17 (7.7%) | 0.617 |
| 1–2 | 227 (95.0%) | 12 (5.0%) | 81 (91.0%) | 8 (9.0%) | ||
| ≥ 3 | 112 (94.9%) | 6 (5.1%) | 27 (87.1%) | 4 (12.9%) | ||
| Smoking | ||||||
| Non-smoker | 184 (93.9%) | 12 (6.1%) | 0.662 | 262 (91.9%) | 23 (8.1%) | 0.228 |
| Past smoker | 126 (95.5%) | 6 (4.5%) | 26 (86.7%) | 5 (16.1%) | ||
| Current smoker | 223 (95.7%) | 10 (4.3%) | 23 (95.8%) | 1 (4.2%) | ||
| Alcohol consumption (times / week) | ||||||
| 0 | 104 (97.2%) | 3 (2.8%) | 0.506 | 116 (92.1%) | 10 (7.9%) | 0.362 |
| 1–2 | 315 (94.6%) | 18 (5.4%) | 161 (89.9%) | 18 (10.1%) | ||
| ≥ 3 | 114 (94.2%) | 7 (5.8%) | 34 (97.1%) | 1 (2.9%) | ||
| Duration of Shift work (years) | ||||||
| < 5 | 42 (95.5%) | 2 (4.5%) | 0.956# | 72 (91.1%) | 7 (8.9%) | 0.863 |
| 5–9 | 179 (94.2%) | 11 (5.8%) | 141 (92.8%) | 11 (7.2%) | ||
| 10–14 | 254 (95.1%) | 13 (4.9%) | 91 (90.1%) | 10 (9.9%) | ||
| ≥ 15 | 58 (96.7%) | 2 (3.3%) | 7 (87.5%) | 1 (12.5%) | ||
| Weekly working hours (hours / week) | ||||||
| ≤ 40 | 81 (97.6%) | 2 (2.4%) | 0.444 | 34 (94.4%) | 2 (5.6%) | 0.148 |
| 41–51 | 363 (94.8%) | 20 (5.2%) | 233 (92.5%) | 19 (7.5%) | ||
| ≥ 52 | 89 (93.7%) | 6 (6.3%) | 44 (84.6%) | 8 (15.4%) | ||
| ISI-K index (score) | ||||||
| Non-significant insomnia (0–15) | 509 (96.0%) | 21 (4.0%) | < 0.001* | 289 (92.6%) | 23 (7.4%) | 0.011* |
| Clinically significant insomnia (16–28) | 24 (77.4%) | 7 (22.6%) | 22 (78.6%) | 6 (21.4%) | ||
FD(−) N the number of functional dyspepsia-negative group, FD(+) N the number of functional dyspepsia-positive group, ISI-K Korean version of insomnia severity index
p-value: p-value of chi-square tests; *p < 0.05; #p-value of fisher’s exact test