Table 1.

T‐stage distribution, high‐risk pathology and tumour thickness in prelockdown (October–December 2019) and postlockdown groups (October–December 2020)

	Excisions (n)da		T‐stage distribution (n)				High‐risk pathology (SCC/BCC) or adverse prognostic feature (melanoma) (n)			Thickness (mm)
	Prelockdown	Postlockdown		Prelockdown	Postlockdown	P‐value^a	Prelockdown	Postlockdown	P‐value^b	Prelockdown	Postlockdown	P‐value^a
BCC	200	252	pT1	190	239	0·93	102/200 (51·0)	116/252 (46·0)	0·29	1·80 (0·20–6·60)	2·00 (–6·00 to 8·50)	0·17
			pT2	8	8
			pT3	2	4
			pT4	0	0
			Not staged	0	0
			Excluded^c	0	1
SCC	56	65	pT1	43	53	0·64	17/56 (30)	25/65 (38)	0·35	2·75 (0·60–22·0)	2·45 (0·20–17·0)	0·23
			pT2	5	1
			pT3	8	11
			pT4	0	0
			Not staged	0	0
			Excluded	0	0
Melanoma	71	52	pTis	13	10	0·83	30/71 (42)	22/52 (42)	1·00	0·95 (0·30–11·9)	0·85 (0·20–17·4)	0·83
			pT1a	24	19
			pT1b	6	5
			pT2a	9	4
			pT2b	2	2
			pT3a	6	3
			pT3b	4	5
			pT4a	2	3
			pT4b	4	1
			Not staged^d	1	0
			Excluded	0	0

Data are n (%) or median (range) unless otherwise stated. BCC, basal cell carcinoma; SCC, squamous cell carcinoma. ^a P‐values represent Mann–Whitney U‐tests of difference in the distribution of pT stage and tumour thickness between the prelockdown (2019) and postlockdown (2020) groups. Distributions of pT stage and tumour thickness were similar, as assessed by visual inspection. A nonparametric test was chosen as the data showed significant right skew and there were extreme (but real) outliers in the tumour thickness data. ^b P‐values represent χ²‐tests of homogeneity in the proportion of skin cancers showing any single high‐risk (BCC/SCC)/adverse prognostic pathological feature (melanoma) between the prelockdown and postlockdown groups. SPSS statistics v. 25 (IBM, Armonk, NY, USA) was used for analysis. P‐values were considered statistically significant at ≤ 0·05. ^cExcluded case: eyelid BCC, staged according to ocular TNM. ^dCase not staged: suspected recurrence.