Table 2. Responses to the perceived stress scale from the C-STRD residents (N = 340).

Perceived stress scale	Never	Almost never	Sometimes	Fairly often	Very often	Average PSS score
How often have you been upset because of something that happened unexpectedly?	10	32	115	153	30	2.59 ± 0.27
How often have you felt that you were unable to control the important things in your life?	8	31	120	169	12	2.57 ± 0.33
How often have you felt nervous and “stressed”?	5	29	80	78	148	3.35 ± 0.65
In the last month, how often have you felt confident about your ability to handle your personal problems?	50	137	115	30	8	2.62 ± 0.28
How often have you felt that things were going your way?	31	162	132	11	4	2.64 ± 0.25
How often have you found that you could not cope with all the things that you had to do?	14	13	151	142	20	2.4 ± 021
In the last month, how often have you been able to control irritations in your life?	35	154	127	18	6	2.62 ± 0.26
How often have you felt that you were on top of things?	63	161	106	6	4	2.84 ± 0.26
How often have you been angered because of things that were outside of your control?	7	23	74	157	79	2.92 ± 0.27
How often have you felt difficulties were piling up so high that you could not overcome them?	2	37	97	200	4	2.67 ± 0.38

The numbers listed in the table indicated how many participants selected the specific item.