Table 5.
Prevalence of conditions over time.
| Year | Prevalence of GERD among Veterans with PTSD | Prevalence of GERD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with GERD | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 13.33% | 7.61% | 1.75 | <.0001 | 8486.39 | 2000 | 7.71% | 4.40% | 1.75 | <.0001 | 8219.42 |
| 2003 | 17.89% | 11.69% | 1.53 | <.0001 | 9185.64 | 2003 | 7.42% | 4.85% | 1.53 | <.0001 | 8532.47 |
| 2006 | 19.61% | 13.34% | 1.47 | <.0001 | 12009.15 | 2006 | 9.50% | 6.46% | 1.47 | <.0001 | 11110.81 |
| 2009 | 20.00% | 13.78% | 1.45 | <.0001 | 16510.45 | 2009 | 12.58% | 8.66% | 1.45 | <.0001 | 15621.97 |
| 2012 | 23.26% | 13.84% | 1.68 | <.0001 | 41804.24 | 2012 | 15.14% | 10.29% | 1.47 | <.0001 | 21999.18 |
| 2015 | 20.15% | 14.26% | 1.41 | <.0001 | 22658.22 | 2015 | 17.47% | 12.36% | 1.41 | <.0001 | 22249.86 |
| 2018 | 19.71% | 14.41% | 1.37 | <.0001 | 20518.95 | 2018 | 18.87% | 18.39% | 1.02 | <.0001 | 146.37 |
| Prevalence of PUD among Veterans with PTSD | Prevalence of PUD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with PUD | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 1.89% | 1.26% | 1.5 | <.0001 | 639.89 | 2000 | 6.60% | 4.40% | 1.5 | <.0001 | 600.48 |
| 2003 | 1.31% | 0.94% | 1.39 | <.0001 | 367.44 | 2003 | 6.76% | 4.85% | 1.39 | <.0001 | 377.72 |
| 2006 | 1.04% | 0.76% | 1.37 | <.0001 | 374.76 | 2006 | 8.87% | 6.46% | 1.37 | <.0001 | 397.56 |
| 2009 | 0.77% | 0.60% | 1.28 | <.0001 | 257.32 | 2009 | 11.18% | 8.66% | 1.29 | <.0001 | 280.58 |
| 2012 | 0.69% | 0.46% | 1.5 | <.0001 | 655.42 | 2012 | 13.49% | 10.29% | 1.31 | <.0001 | 319.11 |
| 2015 | 0.40% | 0.32% | 1.25 | <.0001 | 147.39 | 2015 | 15.49% | 12.36% | 1.25 | <.0001 | 185.31 |
| 2018 | 0.12% | 0.10% | 1.2 | <.0001 | 35.56 | 2018 | 16.34% | 18.39% | 0.89 | <.0001 | 18.53 |
| Prevalence of Functional Dyspepsia among Veterans with PTSD | Prevalence of Functional Dyspepsia among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with Functional Dyspepsia | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 1.94% | 1.01% | 1.92 | <.0001 | 1567.17 | 2000 | 8.42% | 4.40% | 1.91 | <.0001 | 1612.55 |
| 2003 | 1.66% | 0.88% | 1.87 | <.0001 | 1724.83 | 2003 | 9.14% | 4.85% | 1.88 | <.0001 | 1719.2 |
| 2006 | 1.33% | 0.77% | 1.73 | <.0001 | 1431.38 | 2006 | 11.06% | 6.46% | 1.71 | <.0001 | 1482.7 |
| 2009 | 1.17% | 0.66% | 1.73 | <.0001 | 2028.28 | 2009 | 15.31% | 8.66% | 1.77 | <.0001 | 2168.84 |
| 2012 | 1.13% | 0.57% | 1.98 | <.0001 | 3086.51 | 2012 | 17.81% | 10.29% | 1.73 | <.0001 | 2179.8 |
| 2015 | 0.76% | 0.45% | 1.69 | <.0001 | 1696.18 | 2015 | 20.62% | 12.36% | 1.67 | <.0001 | 1852.31 |
| 2018 | 0.44% | 0.26% | 1.69 | <.0001 | 1086.29 | 2018 | 23.28% | 18.39% | 1.27 | <.0001 | 269.27 |
| Prevalence of Crohn’s among Veterans with PTSD | Prevalence of Crohn’s among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with Crohn’s. | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 0.22% | 0.17% | 1.29 | <.0001 | 21.94 | 2000 | 5.65% | 4.40% | 1.28 | <.0001 | 25.83 |
| 2003 | 0.22% | 0.20% | 1.1 | 0.006379 | 7.44 | 2003 | 5.49% | 4.85% | 1.13 | 0.001653 | 9.09 |
| 2006 | 0.23% | 0.21% | 1.1 | 0.002867 | 8.89 | 2006 | 7.04% | 6.46% | 1.09 | 0.010371 | 6.57 |
| 2009 | 0.25% | 0.23% | 1.09 | 0.000625 | 11.7 | 2009 | 9.62% | 8.66% | 1.11 | <.0001 | 28.54 |
| 2012 | 0.32% | 0.24% | 1.33 | <.0001 | 136.23 | 2012 | 11.74% | 10.29% | 1.14 | <.0001 | 34.35 |
| 2015 | 0.28% | 0.26% | 1.08 | 0.001032 | 10.77 | 2015 | 13.32% | 12.36% | 1.08 | 0.000153 | 14.34 |
| 2018 | 0.29% | 0.27% | 1.07 | 0.000441 | 12.35 | 2018 | 15.03% | 18.39% | 0.82 | <.0001 | 130.68 |
| Prevalence of Ulcerative Colitis among Veterans with PTSD | Prevalence of Ulcerative Colitis among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with ulcerative colitis | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 0.27% | 0.24% | 1.13 | 0.024912 | 5.03 | 2000 | 4.84% | 4.40% | 1.1 | 0.032919 | 4.55 |
| 2003 | 0.28% | 0.28% | 1 | 0.75183 | 0.1 | 2003 | 4.97% | 4.85% | 1.02 | <.0001 | 94.19 |
| 2006 | 0.28% | 0.28% | 1 | 0.977719 | 0.00078 | 2006 | 6.42% | 6.46% | 0.99 | 0.841481 | 0.04 |
| 2009 | 0.29% | 0.35% | 0.83 | <.0001 | 55.1 | 2009 | 8.52% | 8.66% | 0.98 | 0.52197 | 0.41 |
| 2012 | 0.35% | 0.31% | 1.13 | <.0001 | 25.81 | 2012 | 10.22% | 10.29% | 0.99 | 0.75183 | 0.1 |
| 2015 | 0.38% | 0.37% | 1.03 | 0.1117 | 2.53 | 2015 | 12.81% | 12.36% | 1.04 | 0.037009 | 4.35 |
| 2018 | 0.51% | 0.46% | 1.11 | <.0001 | 55.77 | 2018 | 15.43% | 18.39% | 0.84 | <.0001 | 175.25 |
| Prevalence of diverticular disease among Veterans with PTSD | Prevalence of diverticular disease among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with diverticular disease | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 2.30% | 1.79% | 1.28 | <.0001 | 268.16 | 2000 | 5.67% | 4.40% | 1.29 | <.0001 | 282.41 |
| 2003 | 2.94% | 2.19% | 1.34 | <.0001 | 641.81 | 2003 | 6.48% | 4.85% | 1.34 | <.0001 | 644.21 |
| 2006 | 3.18% | 2.38% | 1.34 | <.0001 | 977.77 | 2006 | 9.96% | 6.46% | 1.54 | <.0001 | 2280 |
| 2009 | 3.20% | 2.46% | 1.3 | <.0001 | 1151.47 | 2009 | 11.28% | 8.66% | 1.3 | <.0001 | 1246.05 |
| 2012 | 3.13% | 2.39% | 1.31 | <.0001 | 1315.94 | 2012 | 11.78% | 10.29% | 1.45 | <.0001 | 360.17 |
| 2015 | 2.84% | 2.37% | 1.2 | <.0001 | 753.94 | 2015 | 14.83% | 12.36% | 1.2 | <.0001 | 855.55 |
| 2018 | 2.41% | 1.79% | 1.35 | <.0001 | 1973.2 | 2018 | 15.98% | 18.39% | 0.89 | <.0001 | 524.41 |
| Prevalence of IBS among Veterans with PTSD | Prevalence of IBS among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with IBS | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 1.39% | 0.46% | 3.02 | <.0001 | 3473.95 | 2000 | 13.61% | 4.40% | 3.09 | <.0001 | 3762.94 |
| 2003 | 1.36% | 0.48% | 2.83 | <.0001 | 4027.52 | 2003 | 13.82% | 4.85% | 2.85 | <.0001 | 4242.55 |
| 2006 | 1.42% | 0.54% | 2.63 | <.0001 | 5083.98 | 2006 | 17.10% | 6.46% | 2.65 | <.0001 | 5485.6 |
| 2009 | 1.49% | 0.58% | 2.57 | <.0001 | 7244.25 | 2009 | 22.31% | 8.66% | 2.58 | <.0001 | 7952.93 |
| 2012 | 1.93% | 0.64% | 3.02 | <.0001 | 14768.56 | 2012 | 27.14% | 10.29% | 2.64 | <.0001 | 12313.76 |
| 2015 | 1.98% | 0.77% | 2.57 | <.0001 | 15211.03 | 2015 | 31.72% | 12.36% | 2.57 | <.0001 | 17226.02 |
| 2018 | 2.38% | 0.96% | 2.48 | <.0001 | 19093.1 | 2018 | 34.39% | 18.39% | 1.87 | <.0001 | 10631.85 |
| Prevalence of constipation among Veterans with PTSD | Prevalence of constipation among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with constipation | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 0.00% | 0.00% | 1 | N/A | N/A | 2000 | 5.48% | 4.40% | 1.25 | 0.527089 | 0.4 |
| 2003 | 2.29% | 1.44% | 1.59 | <.0001 | 1260.79 | 2003 | 7.72% | 4.85% | 1.59 | <.0001 | 1309.52 |
| 2006 | 2.58% | 1.71% | 1.51 | <.0001 | 1573.78 | 2006 | 9.71% | 6.46% | 1.5 | <.0001 | 1635.86 |
| 2009 | 2.85% | 1.90% | 1.5 | <.0001 | 2429.53 | 2009 | 12.96% | 8.66% | 1.5 | <.0001 | 2595.37 |
| 2012 | 3.49% | 2.02% | 1.73 | <.0001 | 6099.88 | 2012 | 15.56% | 10.29% | 1.51 | <.0001 | 3787.93 |
| 2015 | 2.44% | 1.68% | 1.45 | <.0001 | 2796.38 | 2015 | 17.93% | 12.36% | 1.45 | <.0001 | 95337.52 |
| 2018 | 0.27% | 0.16% | 1.69 | <.0001 | 641.97 | 2018 | 23.59% | 18.39% | 1.28 | <.0001 | 183.61 |
| Prevalence of N/V among Veterans with PTSD | Prevalence of N/V among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | Prevalence of PTSD among Veterans with N/V | Prevalence of PTSD among all Veterans | Ratio | p-Value of Chi square | Goodness-of-fit tests: critical value 3.84 | ||
| 2000 | 8.38% | 3.03% | 2.77 | <.0001 | 17737.76 | 2000 | 12.19% | 4.40% | 2.77 | <.0001 | 18058.88 |
| 2003 | 9.37% | 3.24% | 2.89 | <.0001 | 29552.79 | 2003 | 14.01% | 4.85% | 2.89 | <.0001 | 30013.28 |
| 2006 | 9.92% | 3.63% | 2.73 | <.0001 | 39916.48 | 2006 | 17.63% | 6.46% | 2.73 | <.0001 | 40997.65 |
| 2009 | 10.75% | 4.02% | 2.67 | <.0001 | 59488.29 | 2009 | 23.20% | 8.66% | 2.68 | <.0001 | 57238.51 |
| 2012 | 12.47% | 4.26% | 2.93 | <.0001 | 92859.36 | 2012 | 26.39% | 10.29% | 2.56 | <.0001 | 74555.6 |
| 2015 | 9.92% | 4.14% | 2.4 | <.0001 | 67380.93 | 2015 | 29.67% | 12.36% | 2.4 | <.0001 | 73964.59 |
| 2018 | 2.90% | 1.19% | 2.44 | <.0001 | 22506.6 | 2018 | 36.36% | 18.39% | 1.98 | <.0001 | 15486.7 |
Table shows how the prevalence of each condition is changing over time and compares the prevalence of the single condition to the condition combined with PTSD. For example, the prevalence of IBS in patients with PTSD is always significantly higher than the prevalence of IBS alone. And vice versa, the prevalence of PTSD in patients with IBS is always significantly higher than the prevalence of PTSD alone. Chi-square and goodness-of-fit tests show this significance. This leads to the conclusion that IBS and PTSD are risk factors for each other.