Table 3. Logistic univariable analysis for associations between various factors and endoparasitism in Tennessee goats, 2017–2021.
| Variable | Category | Endoparasitism N (%) |
No Endoparasitism N (%) |
OR | 95% CI | P value |
|---|---|---|---|---|---|---|
| Age | Adult | 305 (45.05) | 372 (54.95) | Ref | — | — |
| Fetus | 34 (12.55) | 237 (87.45) | 0.18 | 0.11–0.28 | <0.0001 | |
| Neonate | 16 (36.36) | 28 (63.64) | 0.70 | 0.32–1.51 | 0.5951 | |
| Juvenile | 142 (56.57) | 109 (43.43) | 1.59 | 1.11–2.27 | 0.0057 | |
| Sex | Male | 191 (41.79) | 266 (58.21) | Ref | — | — |
| Female | 291 (42.48) | 394 (57.52) | 1.03 | 0.78–1.35 | 0.9657 | |
| Unknown | 15 (14.85) | 86 (85.15) | 0.24 | 0.13–0.47 | <0.0001 | |
| Breed | Nubian | 49 (46.67) | 56 (53.33) | Ref | — | — |
| Boer | 73 (40.11) | 109 (59.89) | 0.77 | 0.40–1.46 | 0.8000 | |
| Mixed | 59 (33.71) | 116 (66.29) | 0.58 | 0.30–1.12 | 0.1537 | |
| Pygmy | 43 (36.44) | 75 (63.56) | 0.66 | 0.32–1.34 | 0.4666 | |
| Nigerian dwarf | 37 (34.58) | 70 (65.42) | 0.60 | 0.29–1.26 | 0.3143 | |
| Other Dairy | 31 (40.79) | 45 (59.21) | 0.79 | 0.36–1.74 | 0.9468 | |
| Other Meat | 14 (58.33) | 10 (41.67) | 1.60 | 0.49–5.28 | 0.8343 | |
| Not reported | 191 (41.89) | 265 (58.11) | 0.82 | 0.47–1.45 | 0.9055 | |
| Test laboratory | Kord | 299 (41.36) | 424 (58.64) | Ref | — | — |
| UTCVM | 198 (38.08) | 322 (61.92) | 0.87 | 0.69–1.10 | 0.2446 | |
| Year | 2017 | 106 (43.98) | 135 (56.02) | Ref | — | — |
| 2018 | 95 (39.42) | 146 (60.58) | 0.83 | 0.53–1.30 | 0.6997 | |
| 2019 | 93 (37.35) | 156 (62.65) | 0.76 | 0.48–1.19 | 0.3721 | |
| 2020 | 113 (40.36) | 167 (59.64) | 0.86 | 0.56–1.33 | 0.8189 | |
| 2021 | 90 (38.79) | 142 (61.21) | 0.81 | 0.51–1.28 | 0.6071 | |
| Month | January | 46 (29.11) | 112 (70.89) | Ref | — | — |
| February | 35 (25.00) | 105 (75.00) | 0.81 | 0.39–1.68 | 0.9923 | |
| March | 40 (27.21) | 107 (72.79) | 0.91 | 0.45–1.85 | 1.0000 | |
| April | 23 (24.47) | 71 (75.53) | 0.79 | 0.35–1.80 | 0.9921 | |
| May | 34 (38.20) | 55 (61.80) | 1.51 | 0.69–3.28 | 0.7087 | |
| June | 55 (57.89) | 40 (42.11) | 3.35 | 1.57–7.13 | 0.0001 | |
| July | 50 (55.56) | 40 (44.44) | 3.04 | 1.42–6.54 | 0.0006 | |
| August | 49 (58.33) | 35 (41.67) | 3.41 | 1.56–7.47 | 0.0002 | |
| September | 43 (57.33) | 32 (42.67) | 3.27 | 1.45–7.37 | 0.0006 | |
| October | 41 (53.95) | 35 (46.05) | 2.85 | 1.28–6.38 | 0.0031 | |
| November | 37 (40.66) | 54 (59.34) | 1.67 | 0.77–3.60 | 0.4108 | |
| December | 44 (42.31) | 60 (57.69) | 1.79 | 0.86–3.73 | 0.2162 | |
| Season | Spring | 97 (29.39) | 233 (70.61) | Ref | — | — |
| Summer | 154 (57.25) | 115 (42.75) | 3.22 | 2.14–4.83 | <0.0001 | |
| Fall | 121 (50.00) | 121 (50.00) | 2.40 | 1.59–3.64 | <0.0001 | |
| Winter | 125 (31.09) | 277 (68.91) | 1.08 | 0.74–1.59 | 0.9253 | |
| Region (State) | West TN | 29 (34.94) | 54 (65.06) | Ref | — | — |
| East TN | 202 (38.19) | 327 (61.81) | 1.15 | 0.68–1.94 | 0.7034 | |
| Middle TN | 266 (42.16) | 365 (57.84) | 1.36 | 0.81–2.28 | 0.2819 |