Dimensional (premenstrual symptoms screening tool) vs categorical (mini diagnostic interview, module U) for assessment of premenstrual disorders

Table 1 Corresponding items between premenstrual symptoms screening tool and the Mini-premenstrual dysphoric disorder

Symptom	PSST	MINI-U
Anger/irritability	1	U3 - D
Anxiety/tension	2	U3 - B
Tearful/sensitive to rejection	3	U3 - C
Depressed mood /hopelessness	4	U3 - A
Decreased interest in work activities	5	U3 - E
Decreased interest in home activities	6	U3 - E
Decreased interest in social activities	7	U3 - E
Difficulty concentrating	8	U3 - F
Fatigue/lack of energy	9	U3 - G
Overeating/food cravings	10	U3 - H
Insomnia	11	U3 - I
Hypersomnia	12	U3 - I
Feeling overwhelmed or out of control	13	U3 - J
Physical symptoms	14	U3 - K
Symptoms interfered with:
Work efficiency/productivity	A	U2
Relationship with co-workers	B	U2
Relationship with family	C	U2
Your social life activities	D	U2
Home responsibilities	E	U2
Most menstrual periods of last year are preceded by significant mood changes for almost one week	-	U1

PSST: Premenstrual Symptoms screening tool; MINI-U: The Mini International Neuropsychiatric Interview, Module U.

Table 2 Sociodemographic characteristics

Variables
Mean age (SD), yr	32.12 (8.26)
Country born, n (%)
Qatar	111 (62.0)
Other	68 (38.0)
Marital status, n (%)
Married	112 (62.6)
Never married	55 (30.7)
Divorced/widowed	12 (6.7)
Education level, n (%)
Elementary or intermediate school	11 (6.2)
Secondary or high school	53 (29.9)
Vocational/associate degree	55 (31.1)
University degree or postgraduate degree	58 (32.7)
Employment status, n (%)
Employed	118 (66.6)
Housewife	25 (14.1)
Jobseeker	11 (6.2)
Student	15 (8.5)
Retired	2 (1.1)
Other	6 (3.4)
Lifestyle, n (%)
Current cigarettes smoker	5 (2.8)
Current shisha smoker	9 (5.1)
Regular exercise	55 (30.7)

SD: Standard deviation.

Table 3 Clinical features of subjects

Medical Characteristics, n (%)
PMS, according to PSST	63 (35.2)
PMDD according to PSST	25 (13.9)
PMDD according to MINI	84 (46.7)
Previous diagnoses
Psychiatric diagnosis	6 (3.3)
Depression	9 (5.0)
Chronic lung disease	25 (13.9)
Hypertension	7 (3.9)
Cardiac disease	5 (2.8)
Arthritis	20 (11.1)
Osteoporosis	9 (5.0)
Kidney disease	4 (2.2)
Diabetes	10 (5.6)
Hypercholesterolemia	20 (11.1)
Cancer	2 (1.1)
Allergies	52 (28.9)

PMS: Premenstrual syndrome; PSST: Premenstrual Symptoms screening tool; PMDD: Premenstrual dysphoric disorder.

Table 4 Frequency of symptoms as per the Mini international neuropsychiatric interview, module U and premenstrual symptoms screening tool

	MINI-U (Yes)	Not at all	Mild	Moderate	Severe
PSST symptoms	n (%)	n (%)	n (%)	n (%)	n (%)
Anger/irritability	132 (73.3)	23 (12.8)	38 (21.2)	62 (34.6)	56 (31.3)
Anxiety/tension	98 (54.4)	57 (32.0)	46 (25.8)	46 (25.8)	29 (16.3)
Tearful/sensitive to rejection	97 (53.9)	83 (46.6)	26 (14.6)	32 (18.0)	37 (20.8)
Depressed mood/hopelessness	104 (57.8)	78 (43.8)	40 (22.5)	35 (19.7)	25 (14.0)
Decreased interest in work activities	83 (46.1)(All three)	65 (36.3)	52 (29.1)	41 (22.9)	21 (11.7)
Decreased interest in home activities		53 (29.8)	55 (30.9)	44 (24.7)	26 (14.6)
Decreased interest in social activities		79 (44.1)	49 (27.4)	30 (16.7)	21 (11.7)
Difficulty concentrating	57 (31.7)	96 (53.6)	53 (29.6)	21 (11.7)	9 (5.0)
Fatigue/lack of energy	134 (74.4)	47 (26.9)	56 (32.0)	48 (27.4)	24 (13.7)
Overeating/food cravings	98 (54.4)	92 (51.7)	27 (15.2)	25 (14.0)	34 (19.1)
Insomnia	95 (52.8)(Both)	104 (58.4)	36 (20.2)	21 (11.8)	17 (9.6)
Hypersomnia (needing more sleep)		76 (42.7)	39 (21.9)	33 (18.5)	30 (16.9)
Feeling overwhelmed or out of control	66 (36.7)	101 (57.4)	22 (12.5)	37 (21.0)	16 (9.1)
Physical symptoms	156 (86.7)	16 (9.0)	56 (31.5)	65 (36.5)	41 (23.0)
Symptoms interfered with:
A - Work efficiency/productivity	94 (52.2)(Altogether)	85 (47.8)	45 (25.3)	35 (19.7)	13 (7.3)
B - Relationship with co-workers		108 (61.4)	41 (23.3)	19 (10.8)	8 (4.5)
C - Relationship with family		69 (38.8)	57 (32.0)	36 (20.2)	16 (9.0)
D - Your social life activities		89 (50.0)	49 (27.5)	29 (16.3)	11 (6.2)
E - Home responsibilities		89 (50.0)	55 (30.9)	23 (12.9)	11 (6.2)

PSST: Premenstrual Symptoms screening tool; MINI-U: The Mini international neuropsychiatric interview, module U.

Table 5 Scores on Premenstrual Symptoms screening tool items by the Mini international neuropsychiatric interview, module U dichotomous responses

	MINI-U
	No		Yes
PSST	Median	IQR	Median	IQR	P value1
Anger/irritability	2	2	3	1	< 0.001
Anxiety/tension	2	1	3	2	< 0.001
Tearful/sensitive to rejection	1	0	3	2	< 0.001
Depressed mood/hopelessness	1	1	2	2	< 0.001
Decreased interest in work activities	1	1	3	1	< 0.001
Decreased interest in home activities	2	1	3	1	< 0.001
Decreased interest in social activities	1	1	3	1	< 0.001
Difficulty concentrating	1	1	2	1	< 0.001
Fatigue/lack of energy	1	1	2	1	< 0.001
Overeating/food cravings	1	1	2	2	< 0.001
Insomnia	1	1	1.5	2	0.004
Hypersomnia (needing more sleep)	1	1	3	3	< 0.001
Feeling overwhelmed or out of control	1	1	3	2	< 0.001
Physical symptoms	2	2	3	2	< 0.001
Symptoms interfered with:
Work efficiency/productivity	1	1	2	2	< 0.001
Relationship with co-workers	1	0	2	2	< 0.001
Relationship with family	1	1	2	1	< 0.001
Your social life activities	1	1	2	2	< 0.001
Home responsibilities	1	1	2	2	< 0.001

¹Wilcoxon-Mann-Whitney test was used to compare the PSST severity scores.

PSST: Premenstrual Symptoms screening tool; MINI-U: The Mini international neuropsychiatric interview, module U.

Table 6 The cut-off scores of the Premenstrual Symptoms screening tool items with the corresponding the Mini international neuropsychiatric interview, module U items

Symptom	PSST	MINI-U	AUC	95%CI	J	Cut-off	Sensitivity	Specificity
Anger/irritability	1	U3 - D	0.804a	(0.73-0.88)	0.48	2.5	0.780	0.696
Anxiety/tension	2	U3 - B	0.740a	(0.67-0.81)	0.41	2.5	0.608	0.800
Tearful/sensitive to rejection	3	U3 - C	0.835a	(0.77-0.90)	0.63	1.5	0.814	0.812
Depressed mood/hopelessness	4	U3 - A	0.735a	(0.66-0.81)	0.38	1.5	0.718	0.658
Decreased interest in work activities	5	U3 - E	0.752a	(0.68-0.83)	0.45	2.5	0.590	0.860
Decreased interest in home activities	6	U3 - E	0.743a	(0.67-0.82)	0.39	2.5	0.602	0.783
Decreased interest in social activities	7	U3 - E	0.768a	(0.70-0.84)	0.43	1.5	0.795	0.634
Difficulty concentrating	8	U3 - F	0.806a	(0.74-0.88)	0.55	1.5	0.842	0.706
Fatigue/lack of energy	9	U3 - G	0.728a	(0.64-0.81)	0.36	1.5	0.823	0.535
Overeating/food cravings	10	U3 - H	0.700a	(0.62-0.78)	0.36	2.5	0.495	0.861
Insomnia	11	U3 - I	0.614a	(0.530.70)	0.17	1.5	0.500	0.671
Hypersomnia	12	U3 - I	0.732a	(0.66 0.81)	0.39	2.5	0.537	0.852
Feeling overwhelmed or out of control	13	U3 - J	0.714a	(0.63 0.80)	0.39	1.5	0.667	0.722
Physical symptoms	14	U3 - K	0.723a	(0.60 0.85)	0.33	2.5	0.643	0.682
Symptoms interfered with:
Work efficiency/productivity	A	U2	0.696a	(0.62 0.77)	0.32	1.5	0.677	0.639
Relationship with co-workers	B	U2	0.674a	(0.60 0.75)	0.30	1.5	0.527	0.771
Relationship with family	C	U2	0.686a	(0.61 0.76)	0.30	1.5	0.753	0.542
Your social life activities	D	U2	0.729a	(0.65 0.80)	0.38	1.5	0.677	0.699
Home responsibilities	E	U2	0.724a	(0.65 0.80)	0.40	1.5	0.688	0.711

^aP < 0.01. PSST: Premenstrual Symptoms screening tool; MINI-U: The mini international neuropsychiatric interview, module U; AUC: Area under the curve; CI: Confidence interval; J: Youden index.