Table 1.

Sociodemographic characteristics of participants in this study (n = 211).

Variables	SZ (n = 91)		NS (n = 120)		Total
	Median	IQR	Median	IQR
Age (year)*	46	(37 to 60)	35	(24 to 47.75)
Height (cm)*	165	(157 to 173)	165	(157.25 to 169.75)
Weight (kg)*	65	(56 to 80)	64.5	(55 to 74)

	n	%	n	%	n	%
Sex
Male	60	52.17	55	47.83	115	100.00
Female	31	32.29	65	67.71	96	100.00
Ethnicity
Malay	19	31.15	42	68.85	61	100.00
Chinese	51	53.68	44	46.32	95	100.00
Indian	21	38.18	34	61.82	55	100.00
Occupation
Employed	23	28.40	58	71.60	81	100.00
Unemployed	68	52.31	62	47.69	130	100.00
Mode of delivery
Vaginal	81	44.75	100	55.25	181	100.00
Caesarean	10	33.33	20	66.67	30	100.00
Location of delivery
Hospital	71	40.34	105	59.66	176	100.00
Home	20	57.14	15	42.86	35	100.00
Breastfed during infancy
No	36	64.29	20	35.71	56	100.00
Yes	55	35.48	100	64.52	155	100.00
Family history of mental illness
No	65	38.24	105	61.76	170	100.00
Yes	26	63.41	15	36.59	41	100.00
Presence of other ailmentsa
No	68	39.08	106	60.92	174	100.00
Yes	23	62.16	14	37.84	37	100.00
Presence of gastrointestinal symptoms
No	68	42.24	93	57.76	161	100.00
Yes	23	46.00	27	54.00	50	100.00
Severity of SZ (CGI-S score)
Normal	0	0.00	85	100.00	85	100.00
Mild	26	57.78	19	42.22	45	100.00
Moderate	18	72.00	7	28.00	25	100.00
Severe	47	83.93	9	16.07	56	100.00

*Age, height, and weight are expressed in median (IQR).

^aPresence of any other chronic ailments such as hypertension, renal failure, diabetes etc.