Table 2.

Hand tractor characteristics and bivariate analysis of risk factors associated with hand tractor injuries.

Categories	Total		Injuries		No injuries		RR	95% CI		p Value
	N	%	N	%	N	%
Age of hand tractor
≤10 years	250	66.5	109	43.6	141	56.4	1.37	.95	1.97	.088
>10 years	127	33.5	43	33.9	84	66.1
Horse power
≤10hp	25	6.6	9	36	16	64
>10hp	352	93.4	139	39.5	213	60.5	1.10	0.56	2.15	.788
Type of handlebar
Push type	229	60.9	93	40.6	136	59.4	1.02	0.79	1.32	.852
Squeeze type	147	39.1	59	40.1	88	59.9
Length of handlebar
≤2 m	120	31.9	48	40.0	72	60.0	1.02	0.78	1.34	.862
>2 m	256	68.1	104	40.6	152	59.4
Transmission type
Single transmission (Forward only)	210	55.7	88	41.9	122	58.1	1.16	0.90	1.50	.242
adjustable transmission (include backward)	167	44.3	64	38.3	103	61.7
Attached equipment normally used
Plow blade
Yes	118	31.6	52	44.1	66	55.9	1.19	0.85	1.67	.302
No	255	68.4	97	38.0	158	62.0
Rake
Yes	288	77.0	118	41.0	170	59.0	1.08	0.79	1.47	.615
No	86	23.0	33	38.4	53	61.6
Leveler
Yes	159	42.2	75	47.2	84	52.8	1.41	1.10	1.81	.007**
No	218	57.8	77	35.3	141	64.7
Rotary paddler
Yes	203	54.1	74	36.5	129	63.5	.803	0.58	1.11	.181
No	172	45.9	77	44.8	95	55.2
Safety equipment
Yes	265	70.3	99	37.4	166	62.6
No	112	29.7	53	47.3	59	52.7	1.24	0.91	1.79	.150

^**Statistical Significance at level .05