Table 1.

Farmer characteristics (N = 377) and bivariate analysis of risk factors associated with hand tractor injuries.

Categories	Total		Injuries		No injuries		RR	95%CI		p Value
	N	%	N	%	N	%
Gender
Man	270	71.6	109	40.4	161	59.6	1	0.7	1.43	.999
Woman	107	28.4	43	40.2	64	59.8
Age
≤30 years	17	4.5	11	64.7	6	35.3	1.7	0.92	3.14	.090
>30 years	360	95.5	141	39.2	219	60.8
Education
Primary school	203	54	84	41.4	109	58.6	1.09	0.79	1.51	.586
Higher than primary school	174	46	68	39.1	106	60.9
Hand tractor experience
≤10 years	111	29.6	52	46.8	59	53.2	1.26	0.89	1.76	.182
>10 years	266	70.4	100	37.6	166	62.4
Alcohol consumption
Active drink	151	40.1	61	40.4	90	59.6	0.96	0.69	1.34	.830
Non active	226	59.9	91	40.3	135	59.7
Number of working days per week
≤5 d/week	156	41.7	55	35.3	101	64.7
>5 d/week	218	58.3	95	43.6	123	56.4	1.25	0.89	1.75	.186
Number of working hours per day
≤8h/d	322	85.6	127	39.4	195	60.6
>8h/d	54	14.4	24	44.4	30	55.6	1.05	0.66	1.65	.835
Amount of working area
≤10 Rai/d	259	68.9	105	40.5	154	59.5
>10 Rai/d	118	31.1	47	39.8	71	60.2	.96	0.67	1.36	.815
Sleep problems
Yes	112	30.4	56	50.0	56	50.0	1.39	1.07	1.79	.011**
No	257	69.6	91	35.4	166	64.6
“Hustle work”a
Yes	177	47.5	87	49.2	90	50.8	1.48	1.14	1.90	.003**
No	196	52.5	64	32.7	132	67.3
Feeling fatigue before work
Yes	279	74.4	125	44.8	154	55.2	1.60	1.12	2.28	.009**
No	96	25.6	26	27.1	70	72.9

^a“Hustle work” means having to work quickly to finish soil preparation before sowing the rice seeds. This is because the farmer can put rice seeds into water to germinate for a maximum of 2 d before planting.

^**Statistical Significance at level .05