Table 1.

Characteristics of studies included in systematic review and meta-analysis of prevalence of low back pain in Iranian nurses

Author	Province	Sample Size	Gender (%)	Age	Year	Region of Pain	Measures
Mosadeghrad [27]	Isfahan	499	68.5 female	<20–50+ year	2004	LBP	Self-made questionnaire
Sadeghian [28]	Semnan	235	78.3 female	19–50 year	2005	LBP	Nordic Questionnaire
Mohseni-Bandpei [29]	Mazandran	1226	81.9 female	22–57 year	2006	LBP and the sacroiliac joints	Self-made questionnaire
Choobineh [30]	Fars	641	84.7 female	22–66 year	2006	LBP	Nordic Questionnaire
Choobineh [31]	Fars	375	66.4 female	19–62 year	2010	LBP	Nordic Questionnaire
Abedini [32]	Fars	400	89.8 female	30.78±6.44 year	2012	LBP	Nordic Questionnaire
Eftekhar Sadat [33]	Tabriz	195	85.6 female	23–53 year	2013	LBP	Be changed Dutch Questionnaire
Raeisi [22]	Tehran	477	78.4 female	20–60 year	2013	LBP	Nordic Questionnaire
Golabadi [26]	Tehran	545	79.4 female	32.1±7 year	2013	LBP	Nordic Questionnaire
Attarchi [34]	Tehran	454	76 female	20–55 year	2014	LBP	Nordic Questionnaire
Ghasemi [35]	Isfahan	244	68.9 female	N/A	2014	LBP	(VAS) and (ODQ) Questionnaire
Arsalani [36]	Tehran	520	79.4 female	<30–40+ year	2014	LBP	Adapted questionnaire
Pahlevan [37]	Semnan	286	73.5 female	21–52 year	2014	LBP	Nordic Questionnaire
Rezaee [38]	Tehran	1246	53.7 female	20–61 year	2014	LBP	Self-made questionnaire
Zarrin Ghabaee [39]	Mazandran	940	73.6 female	33.7±8.07	2015	LBP	Nordic Questionnaire
Dehdashti [40]	Semnan	48	83.4 female	24–50	2015	LBP	Nordic Questionnaire
Habibi [41]	Isfahan	247	91 female	23–67 year	2015	LBP	Cornell Questionnaire
Azma [42]	Tehran	144	50.7 male	27–43 year	2015	LBP	Cornell Questionnaire
Rokni [43]	Mazandran	110	88.2 female	21–50 year	2016	LBP	Nordic Questionnaire
Taghinejad [44]	Ilam	135	58.5 female	20–59 year	2016	LBP	Nordic Questionnaire
Saremi [45]	Tehran	30	80 female	25–42 year	2016	LBP	Nordic Questionnaire
Asadi [9]	Gilan	350	90.3 female	22–56 year	2016	LBP	Pre-designed checklist