Stress and sleep quality in doctors working on-call shifts are associated with functional gastrointestinal disorders

Table 2 Baseline characteristics of study subjects according to functional gastrointestinal disorders n (%)

	With FGIDs (n = 48)	Without FGIDs (n = 122)	P value
Age (yr)	27.48 ± 2.70	28.44 ± 3.23	0.069
BMI (kg/m2)	21.80 ± 3.03	21.65 ± 3.79	0.804
Gender (female)	24/48 (50.0)	58/122 (47.5)	0.773
Occupational position (intern)	23/48 (47.9)	43/122 (35.2)	0.300
Marriage (married)	11/48 (22.9)	28/122 (23.0)	0.996
Smoking	3/48 (6.3)	9/122 (7.4)	0.796
Drinking (≥ 1 d/wk)	31/48 (64.6)	54/122 (44.3)	0.292
Working period (yr)	1.35 ± 1.18	1.66 ± 1.35	0.176
Duration of recent on-call work (≥ 2 mo)	39/48 (81.2)	84/122 (68.9)	0.044
Psychosocial alarm (Serious)	40/48 (83.3)	69/122 (56.6)	0.004
Length of sleep (h)	5.35 ± 0.86	5.48 ± 0.86	0.377
Sleep quality score (PSQI)	8.79 ± 2.71	7.30 ± 3.43	0.008
Poor sleeper (PSQI ≥ 6)	43/48 (89.6)	81/122 (66.4)	0.002

FGIDs: Functional gastrointestinal disorders; PSQI: Pittsburgh Sleep Quality Index; Data presented as mean ± SD.