Table 2.

Factors tested for significant association with positive QFT-GIT results.

Variable	Positive QFT-G N=56 (10.77%)		Negative QFT-G N= 464 (89.23%)		Total	P value
	NO.	%	NO.	%
Mean age in years (SD)	38.0 (10.3)		34.5 (9.6)			.01
Sex
Males	46	13.2	302	86.8	348	.01
Females	10	5.8	162	94.2	172
Nationality
Saudi	28	12.7	193	87.33	221	.25
Non Saudi	28	9.3	271	90.7	229
Job classification
Physician	20	20.0	80	80.0	100	.02
Nurse	12	7.5	148	92.5	160
Pharmacist	4	5.7	66	94.3	70
Lab. Technicians	4	8.0	46	92.0	50
Housekeeper	10	14.3	60	95.0	70
Radiology technicians	6	8.7	64	85.7	70
Duration of employment in years	13.1 (9.8)		10.0 (9.1)			.02
Diabetes mellitus type 2
Yes	4	16.7	20	83.3	24	.34
No	52	10.5	444	89.5	496
Use of steroid
Yes	0	0.0	4	100.0	4	.69
No	56	10.9	460	89.1	516
BCG vaccine
Yes	56	10.9	456	89.0	512	.32
No	0	0.0	8	100.0	8
Contact with TB patient
Yes	22	11.0	178	89.0	200	.89
No	34	10.6	286	89.4	320
Type of hospital
Chest hospital (Pilgrims hospital)	16	21.1	60	79.0	76	.001
Multi center non chest hospitals	40	9	404	91.0	444
Tuberculin skin test
Positive	6	13.6	38	86.4	44	.609
Negative	50	10.5	426	89.5	476

Data are mean (standard deviation) or number (percentage)