Predictors of oral health-related quality of life in 2–5 year-old children in the South of Iran

Table 1 Frequency distribution of demographic variables of the study participants

Variable	Item	Absolute frequency	Relative frequency (%)
Respondents	Mother	238	82.6
	Father	46	16
	Child’s caregiver	4	1.4
Child’s age	24–35 months	73	25.3
	36–47 months	81	28.1
	48–59 months	79	27.4
	60–71 months	55	19.2
Child’s gender	Female	148	51.4
Child’s gender	Male	140	48.6
Birth order	First-born	179	62.2
	Second-born	87	30.2
	Third-born and higher	22	7.6
Number of children in a family	Only child	112	38.9
	2–3 children	160	55.6
	4–5 children	16	5.5
Parental age
Father	Below 30 years old	30	10.4
	31–40 years old	208	72.2
	41–50 years old	44	15.3
	Over 50 years old	6	2.1
Mother	Below 30 years old	121	42
	31–40 years old	159	55.2
	41–50 years old	8	2.8
Level of education
Father	Primary school	18	6.2
	Middle school	53	18.4
	High school diploma	105	36.5
	Associate’s degree	21	7.3
	Bachelor’s degree	67	23.3
	Master’s degree and higher	24	8.3
Mother	Primary school	12	4.2
	Middle school	19	6.6
	High school diploma	106	36.8
	Associate’s degree	23	8
	Bachelor’s degree	109	37.8
	Master’s degree and higher	19	6.6
Father’s occupation	Employee	82	28.5
	Worker	37	12.8
	Self-employed	159	55.2
	Retired	2	0.7
	Other	8	2.8
Mother’s occupation	Housewife	237	82.3
	Work from home	4	1.4
	Employed outside the home	42	14.6
	Other	5	1.7

ISSN: 1477-7525