Table 3.

Kappa value (κ) for agreement of classification of SpO₂ as normal or hypoxaemia between the two health worker types and Masimo Radical 7 reference standard, by device and age group.

	Age 0 to <2 months κ (95%CI)		Age 2–59 months κ (95%CI)		Overall κ (95%CI)
Device	CHW	FLHFW	CHW	FLHFW	CHW	FLHFW
Contec	0·00** (0·00 to 0·00)	0·05 ** (−0·05 to 0·06)	0·21 (0·15 to 0·27)	0·39 (0·0.27 to 0.51)	0·15 (0·11 to 0·19)	0·32 (0·22 to 0.51)
Devon	0·00 ** (0·00 to 0·00)	0·00 ** (0·00 to 0·00)	0·42 (0·34 to 0·50)	0·67 (0·53 to 0.81)	0·32 (0·26 to 0.39)	0·55 (0·43 to 0·67)
Lifebox	0·12 (0·04 to 0·2)	0·59 (0·32 to 0·86)	0·47 (0·39 to 0·55)	0·61 (0·47 to 0·75)	0·42 (0·36 to 0.48)	0·61 (0·49 to 0·73)
Utech	0·10 (0·02 to 0·18)	0·53 (0·26 to 0·80)	0·51 (0·45 to 0·57)	0·71 (0·57 to 0·85)	0·39 (0·33 to 0·45)	0·67 (0·55 to 0·76)
Masimo	0·25 (0·13 to 0·18)	0·91 (0·64 to 1·18)	0·65 (0·574 to 0·72)	0·84 (0·70 to 0·98)	0·59 (0·53 to 0.65)	0·86 (0·72 to 0.99)

**small sample.