Table 1 Univariate analysis of sociodemographic and service-related characteristics associated with incident Chlamydia trachomatis infection among female and male soldiers, Fort Bragg, 2005-2010
Female | Male | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
TOTAL (n = 8909) | PY (total = 12586.80) | Infected (total n = 922) n (%) | Hazard ratio | 95% CI | TOTAL (n = 58516) | PY (total = 88563.06) | Infected (total n = 1276) n (%) | Hazard ratio | 95% CI | |||
Age (years) | ||||||||||||
17-20 | 2060 | 2694.47 | 426 | (46) | 6.60 | (5.40-8.06) | 14042 | 20964.21 | 468 | (37) | 3.71 | (3.15-4.35) |
21-25 | 3273 | 4494.38 | 372 | (40) | 3.49 | (2.85-4.28) | 21334 | 30932.45 | 592 | (46) | 3.18 | (2.72-3.72) |
26-67 | 3576 | 5397.95 | 124 | (14) | 1.00 | 23139 | 36663.82 | 216 | (17) | 1.00 | ||
Missing | 0 | 0.00 | 0 | 1 | 2.58 | 1 | ||||||
Race/ethnicity | ||||||||||||
Non-white | 4667 | 6659.46 | 568 | (62) | 1.42 | (1.24-1.62) | 17595 | 26364.53 | 682 | (54) | 2.66 | (2.38-2.97) |
Black | 3093 | 4396.98 | 380 | (42) | 1.44 | (1.24-1.66) | 8913 | 13172.93 | 477 | (38) | 3.72 | (3.30-4.20) |
Hispanic | 1015 | 1493.41 | 121 | (13) | 1.36 | (1.11-1.67) | 6030 | 9293.29 | 157 | (12) | 1.74 | (1.46-2.08) |
Other | 559 | 769.07 | 67 | (7) | 1.44 | (1.11-1.87) | 2652 | 3898.31 | 48 | (4) | 1.26 | (0.94-1.69) |
White | 4048 | 5622.83 | 343 | (38) | 1.00 | 39916 | 60480.45 | 587 | (46) | 1.00 | ||
Unknown | 194 | 304.51 | 11 | 1005 | 1718.09 | 7 | ||||||
Pay grade | ||||||||||||
E1-E4 | 5674 | 7555.88 | 832 | (90) | 5.87 | (4.72-7.30) | 38439 | 55897.88 | 1101 | (86) | 3.59 | (3.06-4.21) |
E5+ | 3235 | 5030.92 | 90 | (10) | 1.00 | 20077 | 32665.18 | 175 | (14) | 1.00 | ||
Education | ||||||||||||
High school or less | 6270 | 8561.25 | 823 | (91) | 4.27 | (3.40-5.35) | 43876 | 65941.18 | 1171 | (94) | 4.52 | (3.60-5.69) |
Some college or higher | 2477 | 3770.11 | 82 | (9) | 1.00 | 13069 | 19997.24 | 78 | (6) | 1.00 | ||
Unknown | 162 | 255.44 | 17 | 1571 | 2624.65 | 27 | ||||||
Marital status | ||||||||||||
Single | 4743 | 6443.52 | 667 | (72) | 2.43 | (2.10-2.80) | 34258 | 50574.89 | 936 | (73) | 2.03 | (1.79-2.30) |
Non-single | 4156 | 6122.33 | 254 | (28) | 1.00 | 24219 | 37913.03 | 340 | (27) | 1.00 | ||
Unknown | 10 | 20.95 | 1 | 39 | 75.14 | 0 | ||||||
History of prior PCS | ||||||||||||
0-3 | 5351 | 7280.65 | 739 | (80) | 2.87 | (2.44-3.37) | 36731 | 54302.64 | 968 | (76) | 1.95 | (1.71-2.21) |
4-34 | 3558 | 5306.15 | 183 | (20) | 1.00 | 21785 | 34260.42 | 308 | (24) | 1.00 | ||
Breaks in duty at Ft. Bragg | ||||||||||||
Yes | 712 | 1306.37 | 894 | (3) | 0.29 | (0.20-0.42) | 3941 | 7118.61 | 30 | (2) | 0.28 | (0.19-0.40) |
No | 8197 | 11280.42 | 28 | (97) | 1.00 | 54575 | 81444.45 | 1246 | (98) | 1.00 | ||
History of prior deployments | ||||||||||||
1-3 | 3338 | 5726.58 | 33 | (4) | 0.31 | (0.22-0.44) | 30292 | 54647.42 | 133 | (10) | 0.75 | (0.63-0.90) |
None | 5571 | 6860.22 | 889 | (96) | 1.00 | 28224 | 33915.64 | 1143 | (90) | 1.00 | ||
Deployment during study | ||||||||||||
Yes | 3338 | 5726.58 | 149 | (16) | 0.25 | (0.21-0.29) | 30292 | 54647.42 | 402 | (32) | 0.29 | (0.26-0.33) |
No | 5571 | 6860.22 | 773 | (84) | 1.00 | 28224 | 33915.64 | 874 | (68) | 1.00 | ||
History of Ct | ||||||||||||
Yes | 959 | 1299.81 | 98 | (11) | 1.02 | (0.83-1.26) | 1186 | 1706.80 | 48 | (4) | 2.00 | (1.50-2.66) |
No | 7950 | 11286.99 | 824 | (89) | 1.00 | 57330 | 86856.27 | 1228 | (96) | 1.00 | ||
History of GC before entry and initial Ct | ||||||||||||
Yes | 163 | 209.38 | 25 | (3) | 1.48 | (0.99-2.20) | 408 | 632.66 | 49 | (4) | 5.29 | (3.98-7.04) |
No | 8746 | 12377.42 | 897 | (97) | 1.00 | 58108 | 87930.40 | 1227 | (96) | 1.00 | ||
Months in service at entry | ||||||||||||
0 to 6 | 2081 | 2896.03 | 359 | (39) | 2.99 | (2.56-3.49) | 16900 | 25143.42 | 434 | (34) | 1.65 | (1.45-1.88) |
7 to 14 | 2028 | 2660.21 | 274 | (30) | 2.42 | (2.05-2.85) | 13010 | 19074.37 | 383 | (30) | 1.90 | (1.66-2.18) |
15 to 297 | 4800 | 7030.56 | 289 | (31) | 1.00 | 28606 | 44345.26 | 459 | (36) | 1.00 | ||
Primary occupation specialty at entry | ||||||||||||
Combat | 1782 | 2673.2 | 110 | (12) | 0.51 | (0.42-0.62) | 21004 | 32014.6 | 339 | (27) | 0.64 | (0.57-0.73) |
Other | 7127 | 9913.60 | 812 | (88) | 1.00 | 37512 | 56548.47 | 937 | (73) | 1.00 |