Table 5.

Significant determinants for overweight/obesity and underweight: related odds ratios and 95 % confidence intervals among 663 randomly selected female university students, south-western Saudi Arabia

Dependent variables	Determinants	OR	95 % CI	P value
Underweight†	Age	1·28	1·09, 1·52	0·003
	Number of sisters, none*			0·046
	Only one	0·22	0·03, 1·95	0·175
	Two or three	0·26	0·03, 2·05	0·200
	Four or five	1·18	0·02, 1·41	0·103
	Six or more	0·12	0·01, 0·91	0·041
	Presence of obese siblings, none is obese*			0·173
	Only one	1·39	0·76, 2·52	0·282
	Two	1·18	0·61, 2·26	0·627
	Three	5·75	1·32, 24·97	0·020
	Four or more	1·69	0·53, 5·35	0·374
	Presence of obese parents, none is obese*			0·077
	One of the parents is obese	1·58	0·93, 2·69	0·091
	Both parents are obese	3·00	0·87, 10·33	0·082
	Activity levels, high active*			0·004
	Low active	0·44	0·25, 0·77	0·004
	Moderately active	0·96	0·52, 1·75	0·881
Overweight/obesity‡	Number of brothers, none or one*			0·089
	Two or three	2·13	1·06, 4·26	0·034
	Four or five	1·85	0·91, 3·79	0·090
	Six or more	1·30	0·64, 2·65	0·462
	Number of sisters, none*			0·004
	Only one	1·60	0·53, 4·79	0·402
	Two or three	3·19	1·20, 8·51	0·020
	Four or five	3·52	1·31, 9·49	0·013
	Six or more	5·55	1·94, 15·85	0·001
	Presence of obese siblings, none is obese*			<0·001
	Only one	0·63	0·37, 1·08	0·092
	Two	0·45	0·26, 0·80	0·006
	Three	0·33	0·17, 0·65	0·001
	Four or more	0·12	0·05, 0·29	<0·001
	Presence of obese parents, none is obese*			0·002
	One of the parents is obese	0·47	0·31, 0·71	<0·001
	Both parents are obese	0·69	0·34, 1·42	0·315
	Parents’ occupational status, both parents work*			0·033
	Only father works	1·68	1·03, 2·77	0·039
	Only mother works	0·81	0·22, 3·01	0·751
	None of them work	2·67	1·28, 5·57	0·009

SAR, Saudi Arabian riyal.

Included variables: age, marital status, father’s level of education, mother’s level of education, presence of obese parents, presence of obese siblings, number of brothers, number of sisters, parents’ occupational status, household’s monthly income, number of cars, proximity to supermarkets, proximity to malls, and activity levels.

^*Reference category,

^†Nagelkerke R ²=0·133; Hosmer and Lemeshow test, χ ²=11·956, P=0·153.

^‡Nagelkerke R ²=0·179; Hosmer and Lemeshow test, χ ²=10·022, P=0·263.