Table 4

Descriptive statistics for change between timepoints in finger prick serum 25(OH)D levels (nmol/l) at each timepoint by patch (n=15 per patch) and by total sample (n=30)

Patch assigned		∆ change from week 0 to each timepoint, serum 25(OH)D nmol/L				∆ change between timepoints, serum 25(OH)D nmol/L
Patch assigned		Week 2	Week 4	Week 6	Week 8	Week 2–4	Week 4–6	Week 6–8
Small patch	N	10	11	13	12	11	13	14
	Mean	−2.40	−1.91	7.77	10.42	3.45	8.08	4.43
	Std. deviation	8.18	10.72	11.65	11.36	8.51	5.56	6.63
	Minimum	−22.00	−17.00	−10.00	−4.00	−13.00	−1.00	−4.00
	Maximum	7.00	19.00	34.00	30.00	16.00	17.00	14.00
	Median	0.00	−3.00	10.00	9.50	3.00	7.00	4.50
Big patch	N	12	14	14	14	13	15	15
	Mean	4.33	6.00	13.79	16.57	2.62	7.93	2.87
	Std. deviation	7.76	9.17	12.31	11.49	6.20	8.45	6.86
	Minimum	−7.00	−4.00	−4.00	−2.00	−7.00	−6.00	−6.00
	Maximum	19.00	31.00	40.00	40.00	12.00	26.00	17.00
	Median	4.50	2.00	12.00	14.00	4.00	6.00	2.00
Total	N	22	25	27	26	24	28	29
	Mean	1.27	2.52	10.89	13.73	3.00	8.00	3.62
	Std. deviation	8.49	10.46	12.16	11.63	7.19	7.12	6.68
	Minimum	−22.00	−17.00	−10.00	−4.00	−13.00	−6.00	−6.00
	Maximum	19.00	31.00	40.00	40.00	16.00	26.00	17.00
	Median	2.00	2.00	10.00	12.00	3.50	7.00	4.00