Table 1

Characteristics of nurses and hospitals, by shift length

Shift length (hours)
Characteristics≤88.1–1010.1–11.9≥12All
Registered nurses
Number of registered nurses; n (%)15 930 (50)9963 (32)1159 (4)4575 (14)31 627 (100)
Worked day shift on their last shift; n (%)15 411 (49)5960 (19)357 (1)2899 (9)24 627 (78)
Worked night shift on their last shift; n (%)519 (2)4003 (13)802 (3)1676 (5)7000 (22)
Worked overtime on their last shift; n (%)2669 (8)4175 (13)461 (1)1301 (4)8606 (27)
Works part-time in the hospital5888 (19)4109 (13)320 (1)470 (1)10 787 (34)
Age; mean38.138.439.537.538.2
Age min–max18–7020–7020–6520–6818–70
Sex
 Female; n (%)14 631 (46)9170 (29)1018 (4)4336 (14)29 155 (92)
 Male; n (%)1299 (4)793 (3)141 (1)239 (1)2472 (8)
Unit
Type of unit
 Medical; n (%)9227 (29)5732 (18)648 (3)2352 (7)17 959 (57)
 Surgical; n (%)6703 (21)4231 (13)511 (2)2223 (7)13 668 (43)
Staffing levels
 <6.1 patients/nurse (reference category); n (%)7944 (25)3231 (10)222 (1)1047 (3)12 444 (39)
 6.1–7.3 patients/nurse; n (%)2145 (7)1070 (3)138 (0)594 (2)3947 (12)
 7.4–9.2 patients/nurse; n (%)2179 (7)1268 (4)176 (0)778 (2)4401 (14)
 9.3–11.5 patients/nurse; n (%)1887 (6)1417 (4)229 (1)1042 (3)4575 (14)
 >11.5 patients/nurse; n (%)1775 (6)2977 (9)394 (1)1114 (3.5)6260 (20)
Hospital
Technology status
 High technology (performing major organ transplant surgery, open heart surgery, or both); n (%)10 236 (32)6437 (20)566 (2)2567 (8)19 806 (63)
 Not high technology hospital; n(%)5694 (18)3526 (11)593 (2)2008 (6)11 413 (27)
Teaching status
 Teaching; n(%)10 913 (34)6956 (22)667 (2)2896 (9)21 432 (67)
 Not teaching; n(%)5017 (16)3007 (10)492 (1)1679 (5)10 195 (23)
Size
 Small (<250 beds); n(%)3894 (12)2393 (7)207 (1)545 (2)7039 (22)
 Medium (≥250, ≤500); n(%)5564 (17)3684 (12)457 (1)1007 (3)10 712 (34)
 Large (>500); n(%)6472 (20)3886 (12)495 (1)3023 (9)13 876 (44)
  • Percentages may not sum to 100 because of rounding (n=31 627).