Low Back Pain and Associated Factors among Primary School Teachers in Mekele City, North Ethiopia: A Cross-Sectional Study

Table 2

Work-related characteristics of primary school teachers in Mekele City, north Ethiopia, 2017.

Variables	Frequency	Percent
Prolonged standing during teaching
Yes	467	76.5
No	144	23.5
Length of standing during teaching per session
2-5 hours	295	63.0
More than 5 hours	172	37.0
Frequency of teaching class
One class per week	57	9.3
Moving from class to class	554	90.7
Length of break time between sessions
Less than 20 minutes	256	41.9
Up to 1 hour	228	37.3
More than 1 hour	103	16.8
Working hours per week
<30 hours	413	67.6
≥30 hours	198	32.4
Sleeping time per day
<6	171	28.0
6-9	342	56.0
≥10	98	16.0
Sleeping disturbance
Yes	229	37.5
No	382	62.5
Have prolonged sitting
Yes	156	25.6
No	454	74.4
Reasons of prolonged sitting at work
For exam marking	87	55.8
For assignment marking	56	35.9
Other reasons	13	8.3
Type of seat frequently used at office
Swivel chair	12	2.0
Normal chair	257	42.0
Bench	342	56.0
Work shift pattern
Only morning	105	17.2
Whole shift	142	23.3
Once per week	363	59.5
Have separate office
Yes	64	10.3
No	547	89.7
Shifting heavy materials
Yes	206	33.7
No	405	66.3
Have extracurricular activity
Yes	478	78.3
No	133	21.7
Have regular physical exercise
Yes	423	69.2
No	188	30.8
Time for physical exercise per week (in hours)
≤5	451	74.6
>5	156	25.4
Have training on safety at work
Yes	232	37.9
No	379	62.1
Satisfaction with working environment
Yes	277	45.3
No	334	54.7
Have discouragement and depression
Yes	325	53.2
No	286	46.8
Experience of any verbal or physical violence
Yes	202	33.1
No	409	66.9