Demographic and Epidemiological Characteristics in the Case and Control Groups
| Characteristic . | Patients, No. (%)a . | P Value . | |
|---|---|---|---|
| Case Group (n = 108) . | Control Group (n = 108) . | ||
| Age, mean (SD), y | 53.25 (10.48) | 43.12 (13.84) | <.001 |
| Sex | |||
| Male | 82 (75.93) | 87 (80.56) | .41 |
| Female | 26 (24.07) | 21 (19.44) | |
| Ethnicity | |||
| Han | 96 (88.89) | 98 (90.74) | .93 |
| Dongxiang | 5 (4.63) | 4 (3.70) | |
| Hui | 5 (4.63) | 5 (4.63) | |
| Other | 2 (1.85) | 1 (0.93) | |
| Occupation | |||
| Animal herder | 105 (97.22) | 97 (89.81) | .050 |
| Other | 3 (2.78) | 11 (10.19) | |
| Hypertension | 6 (5.56) | 12 (11.11) | .14 |
| Diabetes | 6 (5.56) | 12 (11.11) | .14 |
| Coronary heart disease | 2 (1.85) | 1 (0.93) | >.99 |
| Smoking | 8 (7.41) | 14 (12.96) | .18 |
| Alcohol | 1 (0.93) | 2 (1.85) | >.99 |
| Animal exposure | |||
| Sheep | 60 (55.56) | 57 (52.78) | .68 |
| Cattle | 40 (37.04) | 40 (37.04) | >.99 |
| Family history of brucellosis infection | 4 (3.70) | 3 (2.78) | >.99 |
| Clinical type | |||
| Acute and subacute | 98 (90.74) | 103 (95.37) | .28 |
| Chronic | 10 (9.26) | 5 (4.63) | |
| Time from symptom onset to diagnosis, mean (SD), wk | 11.17 (13.55) | 6.03 (8.02) | .001 |
| Characteristic . | Patients, No. (%)a . | P Value . | |
|---|---|---|---|
| Case Group (n = 108) . | Control Group (n = 108) . | ||
| Age, mean (SD), y | 53.25 (10.48) | 43.12 (13.84) | <.001 |
| Sex | |||
| Male | 82 (75.93) | 87 (80.56) | .41 |
| Female | 26 (24.07) | 21 (19.44) | |
| Ethnicity | |||
| Han | 96 (88.89) | 98 (90.74) | .93 |
| Dongxiang | 5 (4.63) | 4 (3.70) | |
| Hui | 5 (4.63) | 5 (4.63) | |
| Other | 2 (1.85) | 1 (0.93) | |
| Occupation | |||
| Animal herder | 105 (97.22) | 97 (89.81) | .050 |
| Other | 3 (2.78) | 11 (10.19) | |
| Hypertension | 6 (5.56) | 12 (11.11) | .14 |
| Diabetes | 6 (5.56) | 12 (11.11) | .14 |
| Coronary heart disease | 2 (1.85) | 1 (0.93) | >.99 |
| Smoking | 8 (7.41) | 14 (12.96) | .18 |
| Alcohol | 1 (0.93) | 2 (1.85) | >.99 |
| Animal exposure | |||
| Sheep | 60 (55.56) | 57 (52.78) | .68 |
| Cattle | 40 (37.04) | 40 (37.04) | >.99 |
| Family history of brucellosis infection | 4 (3.70) | 3 (2.78) | >.99 |
| Clinical type | |||
| Acute and subacute | 98 (90.74) | 103 (95.37) | .28 |
| Chronic | 10 (9.26) | 5 (4.63) | |
| Time from symptom onset to diagnosis, mean (SD), wk | 11.17 (13.55) | 6.03 (8.02) | .001 |
Abbreviation: SD, standard deviation.
aData represent no. (%) of participants unless otherwise specified.
Demographic and Epidemiological Characteristics in the Case and Control Groups
| Characteristic . | Patients, No. (%)a . | P Value . | |
|---|---|---|---|
| Case Group (n = 108) . | Control Group (n = 108) . | ||
| Age, mean (SD), y | 53.25 (10.48) | 43.12 (13.84) | <.001 |
| Sex | |||
| Male | 82 (75.93) | 87 (80.56) | .41 |
| Female | 26 (24.07) | 21 (19.44) | |
| Ethnicity | |||
| Han | 96 (88.89) | 98 (90.74) | .93 |
| Dongxiang | 5 (4.63) | 4 (3.70) | |
| Hui | 5 (4.63) | 5 (4.63) | |
| Other | 2 (1.85) | 1 (0.93) | |
| Occupation | |||
| Animal herder | 105 (97.22) | 97 (89.81) | .050 |
| Other | 3 (2.78) | 11 (10.19) | |
| Hypertension | 6 (5.56) | 12 (11.11) | .14 |
| Diabetes | 6 (5.56) | 12 (11.11) | .14 |
| Coronary heart disease | 2 (1.85) | 1 (0.93) | >.99 |
| Smoking | 8 (7.41) | 14 (12.96) | .18 |
| Alcohol | 1 (0.93) | 2 (1.85) | >.99 |
| Animal exposure | |||
| Sheep | 60 (55.56) | 57 (52.78) | .68 |
| Cattle | 40 (37.04) | 40 (37.04) | >.99 |
| Family history of brucellosis infection | 4 (3.70) | 3 (2.78) | >.99 |
| Clinical type | |||
| Acute and subacute | 98 (90.74) | 103 (95.37) | .28 |
| Chronic | 10 (9.26) | 5 (4.63) | |
| Time from symptom onset to diagnosis, mean (SD), wk | 11.17 (13.55) | 6.03 (8.02) | .001 |
| Characteristic . | Patients, No. (%)a . | P Value . | |
|---|---|---|---|
| Case Group (n = 108) . | Control Group (n = 108) . | ||
| Age, mean (SD), y | 53.25 (10.48) | 43.12 (13.84) | <.001 |
| Sex | |||
| Male | 82 (75.93) | 87 (80.56) | .41 |
| Female | 26 (24.07) | 21 (19.44) | |
| Ethnicity | |||
| Han | 96 (88.89) | 98 (90.74) | .93 |
| Dongxiang | 5 (4.63) | 4 (3.70) | |
| Hui | 5 (4.63) | 5 (4.63) | |
| Other | 2 (1.85) | 1 (0.93) | |
| Occupation | |||
| Animal herder | 105 (97.22) | 97 (89.81) | .050 |
| Other | 3 (2.78) | 11 (10.19) | |
| Hypertension | 6 (5.56) | 12 (11.11) | .14 |
| Diabetes | 6 (5.56) | 12 (11.11) | .14 |
| Coronary heart disease | 2 (1.85) | 1 (0.93) | >.99 |
| Smoking | 8 (7.41) | 14 (12.96) | .18 |
| Alcohol | 1 (0.93) | 2 (1.85) | >.99 |
| Animal exposure | |||
| Sheep | 60 (55.56) | 57 (52.78) | .68 |
| Cattle | 40 (37.04) | 40 (37.04) | >.99 |
| Family history of brucellosis infection | 4 (3.70) | 3 (2.78) | >.99 |
| Clinical type | |||
| Acute and subacute | 98 (90.74) | 103 (95.37) | .28 |
| Chronic | 10 (9.26) | 5 (4.63) | |
| Time from symptom onset to diagnosis, mean (SD), wk | 11.17 (13.55) | 6.03 (8.02) | .001 |
Abbreviation: SD, standard deviation.
aData represent no. (%) of participants unless otherwise specified.
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