A cross-sectional study of lactation room quality and Dutch working mothers’ satisfaction, perceived ease of, and perceived support for breast milk expression at work

Table 1 Interrater reliability of the Lactation room quality checklist items (Studies 1a and 1b)

Study	1a			1b
Description	n	% Agreement	Cohen’s Kappa	n	% Agreement	Cohen’s Kappa
Access:
Door with a lock	33	97.97	0.76	31	100	1.00
Lactation room sign	33	95.95	0.91	31	80.60	0.59
Occupied sign	33	83.83	0.65	31	87.10	0.74
Furniture:
(Folding) bed	33	95.95	0.89	31	96.80	0.93
Couch	33	93.93	0.53	31	100	undefined
Chair	33	100	1.00	31	100	undefined
Table(s) or surface	33	93.93	0.67	31	96.80	0.00
Facilities:
Coat rack or hook*	33	100	1.00	23	78.30	0.16
Room divider	33	100	undefined	31	100	undefined
Functional socket	33	100	1.00	27	100	undefined
Breast pump	33	95.95	undefined	31	100	1.00
Paper towels	33	91.91	0.83	31	90.30	0.81
Wet wipes	33	97.97	0.76	31	93.50	0.00
Trash can	33	91.91	0.78	30	86.70	0.60
Sink	33	100	1.00	31	96.80	0.92
Fridge	33	100	1.00	31	87.10	0.72
Mirror	33	91.91	0.80	29	100	1.00
Entertainment/relaxation:
Radio	33	95.95	0.75	31	100	1.00
Television	33	97.97	0.76	31	100	undefined
Books and/or magazines	33	95.95	0.90	31	100	1.00
Facilities to make coffee or tea*	33	97.97	undefined	31	93.50	−0.03
Pillow on the couch or chair*	33	91.91	0.73	30	86.70	0.29
Blanket*	33	81.81	0.25	30	83.30	0.21
Decoration:
Posters or paintings	33	95.95	0.91	30	86.70	0.72
Artificial plants or flowers	33	97.97	0.89	30	96.70	0.78
Real plants or flowers	33	100	1.00	31	93.50	−0.03
Coloured wall(s)	33	97.97	0.91	30	86.70	0.44
Bulletin board	33	91.91	0.46	31	90.30	0.52
Other decorative items*	33	83.83	0.50	29	79.30	0.13
Windows and lighting:
Window	33	97.97	0.95	31	100	1.00
Artificial light	33	100	undefined	30	93.30	−0.03
Dimmer	33	100	1.00	30	96.70	0.65
Ambient lighting	33	89.89	0.23	31	96.80	0.65
Climate control:
Heating	33	72.72	0.51	20	95.00	0.77
Air-conditioning*	33	48.48	0.19	5	80.00	0.55

‘undefined’ means that the κ value could not be computed because of perfect agreement between two or more raters and the absence of variation in rating scores. Removed items are marked with an asterisk (*)

ISSN: 1746-4358